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Research Outputs 1999 2019

Adaptive estimation of a time-varying phase with a power-law spectrum via continuous squeezed states

Dinani, H. T. & Berry, D. W., 15 Jun 2017, In : Physical Review A. 95, 6, p. 1-10 10 p., 063821.

Research output: Contribution to journalArticleResearchpeer-review

continuous spectra
scaling
statistics
photons
simulation

Adaptive estimation of a time-varying phase with coherent states: Smoothing can give an unbounded improvement over filtering

Laverick, K. T., Wiseman, H. M., Dinani, H. T. & Berry, D. W., 23 Apr 2018, In : Physical Review A. 97, 4, p. 1-11 11 p., 042334.

Research output: Contribution to journalArticleResearchpeer-review

smoothing
Cramer-Rao bounds
statistics
phase error
estimators

Adaptive measurements and optimal states for quantum interferometry

Berry, D. W. & Wiseman, H. M., May 2001, Technical Digest - Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference, QELS 2001. Piscataway, N.J.: Institute of Electrical and Electronics Engineers (IEEE), p. 60-61 2 p. 961853

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Interferometry
Interferometers
interferometry
Phase shift
interferometers

Adaptive measurements in the optical quantum information laboratory

Wiseman, H. M., Berry, D. W., Bartlett, S. D., Higgins, B. L. & Pryde, G. J., Nov 2009, In : IEEE Journal on Selected Topics in Quantum Electronics. 15, 6, p. 1661-1672 12 p., 5337900.

Research output: Contribution to journalArticleResearchpeer-review

Quantum communication
Network protocols
quantum communication
quantum computation
Interferometry

Adaptive optical phase estimation

Nakane, D., Wheatley, T. A., Berry, D. W., Yonezawa, H., Arao, H., Pope, D. T., Ralph, T. C., Wiseman, H. M., Huntington, E. H. & Furusawa, A., 2010, Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010. Washington, DC: Optical Society of America (OSA), p. 1-2 2 p. 5501067

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

smoothing
continuous radiation

Adaptive optical phase estimation using time-symmetric quantum smoothing

Wheatley, T. A., Berry, D. W., Yonezawa, H., Nakane, D., Arao, H., Pope, D. T., Ralph, T. C., Wiseman, H. M., Furusawa, A. & Huntington, E. H., 3 Mar 2010, In : Physical Review Letters. 104, 9, p. 1-4 4 p., 093601.

Research output: Contribution to journalArticleResearchpeer-review

smoothing
gravitational waves
estimating
phase shift
estimates

Adaptive optical phase estimation using time-symmetric quantum smoothing

Wheatley, T. A., Berry, D. W., Yonezawa, H., Nakane, D., Arao, H., Pope, D. T., Ralph, T. C., Wiseman, H. M., Furusawa, A. & Huntington, E. H., 2011, QCMC 2010 : Quantum Communication, Measurement and Computing : the Tenth International Conference. Ralph, T. & Lam, P. K. (eds.). College Park, MD: American Institute of Physics, p. 129-132 4 p. (AIP conference proceedings; vol. 1363, no. 1).

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

smoothing
gravitational waves
estimates
predictions

Adaptive phase estimation with two-mode squeezed vacuum and parity measurement

Huang, Z., Motes, K. R., Anisimov, P. M., Dowling, J. P. & Berry, D. W., 12 May 2017, In : Physical Review A. 95, 5, p. 1-8 8 p., 053837.

Research output: Contribution to journalArticleResearchpeer-review

parity
vacuum
sensitivity
Mach-Zehnder interferometers
ambiguity

Adaptive phase measurements for narrowband squeezed beams

Berry, D. W., Wiseman, H. M. & Huntington, E. H., 2006, Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD). Long Beach, CA: Optical Society of America (OSA), p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Phase measurement
narrowband
Experiments

Adaptive phase measurements for narrowband squeezed beams

Berry, D. W. & Wiseman, H. M., 2006, In : Physical Review A - Atomic, Molecular, and Optical Physics. 73, 6, p. 1-13 13 p., 063824.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
narrowband
scaling
compressing
estimating
frequency ranges

Adaptive quantum measurements of a continuously varying phase

Berry, D. W. & Wiseman, H. M., 2002, In : Physical Review A. Atomic, Molecular, and Optical Physics. 65, 4, p. 1-11 11 p., 043803.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
invariance
electromagnetic fields
oscillators
scaling

Adaptive tracking of a time-varying field with a quantum sensor

Bonato, C. & Berry, D. W., 30 May 2017, In : Physical Review A. 95, 5, p. 1-10 10 p., 052348.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
sensors
magnetic fields
estimating
spatial resolution
time measurement

Bayesian estimation for quantum sensing in the absence of single-shot detection

Dinani, H. T., Berry, D. W., Gonzalez, R., Maze, J. R. & Bonato, C., 11 Mar 2019, In : Physical Review B. 99, 12, p. 1-7 7 p., 125413.

Research output: Contribution to journalArticleResearchpeer-review

shot
electron spin
Vacancies
readout
Nitrogen

Black-box hamiltonian simulation and unitary implementation

Berry, D. W. & Childs, A. M., 1 Jan 2012, In : Quantum Information and Computation. 12, 1-2, p. 29-62 34 p.

Research output: Contribution to journalArticleResearchpeer-review

Hamiltonians
Black Box
boxes
Simulation
simulation

Black-box quantum state preparation without arithmetic

Sanders, Y., Low, G. H., Scherer, A. & Berry, D., 16 Jan 2019, In : Physical Review Letters. 122, 2, p. 020502-1-020502-5 5 p., 020502.

Research output: Contribution to journalArticleResearchpeer-review

subroutines
quantum computers
boxes
preparation
physics

Bounds on general entropy measures

Berry, D. W. & Sanders, B. C., 12 Dec 2003, In : Journal of Physics A: Mathematical and General. 36, 49, p. 12255-12265 11 p.

Research output: Contribution to journalArticleResearchpeer-review

Entropy
entropy
Quantum State
Probability Distribution
concavity

Conservation of vacuum in an interferometer

Berry, D. W. & Lvovsky, A. I., 2011, CLEO:2011 : Laser Applications to Photonic Applications: OSA Technical Digest. Washington, DC: Optical Society of America (OSA), 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Interferometers
conservation
Optics
Conservation
interferometers

Corrected quantum walk for optimal Hamiltonian simulation

Berry, D. & Novo, L., Nov 2016, In : Quantum Information and Computation. 16, 15&16, p. 1295–1317 23 p.

Research output: Contribution to journalArticleResearchpeer-review

Quantum Walk
Hamiltonians
Scaling
scaling
Quantum Chemistry

Demonstrating Heisenberg-limited unambiguous phase estimation without adaptive measurements

Higgins, B. L., Berry, D. W., Bartlett, S. D., Mitchell, M. W., Wiseman, H. M. & Pryde, G. J., 9 Jul 2009, In : New Journal of Physics. 11, p. 1-14 14 p., 073023.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
phase shift
ambiguity
standard deviation
scaling
photons

Effects associated with bubble formation in optical trapping

Berry, D. W., Heckenberg, N. R. & Rubinsztein-Dunlop, H., 20 Jul 2000, In : Journal of Modern Optics. 47, 9, p. 1575-1585 11 p.

Research output: Contribution to journalArticleResearchpeer-review

bubbles
trapping
Marangoni convection
liquids
free convection

Efficiencies of quantum optical detectors

Hogg, D., Berry, D. W. & Lvovsky, A. I., 25 Nov 2014, In : Physical Review A - Atomic, Molecular, and Optical Physics. 90, 5, p. 1-4 4 p., 053846.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
detectors
light sources

Efficiency limits for linear optical processing of single photons and single-rail qubits

Berry, D. W., Lvovsky, A. I. & Sanders, B. C., 2007, In : Journal of the Optical Society of America B: Optical Physics. 24, 2, p. 189-197 9 p.

Research output: Contribution to journalArticleResearchpeer-review

rails
photons
counting
photonics
output

Efficient quantum algorithms for simulating sparse hamiltonians

Berry, D. W., Ahokas, G., Cleve, R. & Sanders, B. C., Mar 2007, In : Communications in Mathematical Physics. 270, 2, p. 359-371 13 p.

Research output: Contribution to journalArticleResearchpeer-review

Quantum Algorithms
entry
Efficient Algorithms
Scaling
Quantum State

Efficient recycling strategies for preparing large Fock states from single-photon sources: Applications to quantum metrology

Motes, K. R., Mann, R. L., Olson, J. P., Studer, N. M., Bergeron, E. A., Gilchrist, A., Dowling, J. P., Berry, D. W. & Rohde, P. P., 27 Jul 2016, In : Physical Review A - Atomic, Molecular, and Optical Physics. 94, 1, p. 1-9 9 p., 012344.

Research output: Contribution to journalArticleResearchpeer-review

recycling
metrology
photons
preparation
photometers

Encoding electronic spectra in quantum circuits with linear T complexity

Babbush, R., Gidney, C., Berry, D. W., Wiebe, N., McClean, J., Paler, A., Fowler, A. & Neven, H., 23 Oct 2018, In : Physical Review X. 8, 4, p. 041015-1-041015-36 36 p., 041015.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
electronic spectra
coding
electronic structure
phase error
sampling

Entanglement-enhanced measurement of a completely unknown optical phase

Xiang, G. Y., Higgins, B. L., Berry, D. W., Wiseman, H. M. & Pryde, G. J., Jan 2011, In : Nature Photonics. 5, 1, p. 43-47 5 p.

Research output: Contribution to journalArticleResearchpeer-review

shot noise
Shot noise
interferometry
Interferometry
Quantum entanglement

Entanglement-enhanced measurement of a completely unknown phase

Berry, D. W., Xiang, G. Y., Higgins, B. L., Wiseman, H. M. & Pryde, G. J., May 2010, Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010. Washington, DC: Optical Society of America (OSA), p. 1-2 2 p. 5500705

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Phase measurement
Feedback
estimates

Entanglement-free, heisenberg-limited phase measurement

Higgins, B. L., Wiseman, H. M., Pryde, G. J., Berry, D. W. & Bartlett, S. D., 2007, Proceedings of Quantum-Atom Optics Downunder 2007. Washington, DC: Optical Society of America (OSA), p. 1-1 1 p. (Optics InfoBase Conference Paper Series).

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Phase measurement
Photons
scaling
photons
Phase shift

Entanglement-free, Heisenberg-limited phase measurement

Higgins, B. L., Wiseman, H. M., Pryde, G. J., Berry, D. W. & Bartlett, S. D., 2008, Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies 2008 Technical Digest. Washington, DC: Optical Society of America (OSA), p. 1-2 2 p. QThK4

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

scaling
phase shift
photons

Entanglement-free Heisenberg-limited phase estimation

Higgins, B. L., Berry, D. W., Bartlett, S. D., Wiseman, H. M. & Pryde, G. J., 15 Nov 2007, In : Nature. 450, 7168, p. 393-396 4 p.

Research output: Contribution to journalArticleResearchpeer-review

Photons
Uncertainty
Interferometry
Ions

Entangling power and operator entanglement in qudit systems

Wang, X., Sanders, B. C. & Berry, D. W., 2003, In : Physical Review A - Atomic, Molecular, and Optical Physics. 67, 4, p. 42323-1-42323-8 8 p., 042323.

Research output: Contribution to journalReview articleResearchpeer-review

Open Access
File
entropy
operators

Equivalence between two-mode spin squeezed states and pure entangled states with equal spin

Berry, D. W. & Sanders, B. C., 8 Apr 2005, In : Journal of Physics A: Mathematical and General. 38, 14, p. L205-L211 7 p.

Research output: Contribution to journalArticleResearchpeer-review

Squeezed States
Entangled State
equivalence
Equivalence
Subsystem

Experimental demonstration of secure quantum key distribution using macroscopic non-classical optical pulses

Funk, A. C., Raymer, M. G. & Berry, D. W., 2004, In : OSA Trends in Optics and Photonics Series. 97, p. 491-493 3 p.

Research output: Contribution to journalArticleResearchpeer-review

Quantum cryptography
Bit error rate
Laser pulses
Demonstrations

Experimental optical phase measurement approaching the exact Heisenberg limit

Daryanoosh, S., Slussarenko, S., Berry, D. W., Wiseman, H. M. & Pryde, G. J., 2 Nov 2018, In : Nature Communications. 9, 1, 6 p., 4606.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
Shot noise
Phase measurement
Noise
Optics and Photonics
Photons

Exponential improvement in precision for simulating sparse Hamiltonians

Berry, D., Childs, A. M., Cleve, R., Kothari, R. & Somma, R. D., 2 Mar 2017, In : Forum of Mathematics, Sigma. 5, p. 1-40 40 p., e8.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
Hamiltonians
Amplification
Derivatives

Exponential improvement in precision for simulating sparse Hamiltonians

Berry, D. W., Childs, A. M., Cleve, R., Kothari, R. & Somma, R. D., 2014, STOC 2014 - Proceedings of the 2014 ACM Symposium on Theory of Computing. New York: Association for Computing Machinery, p. 283-292 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearch

Hamiltonians
Amplification
Derivatives

Exponentially more precise quantum simulation of fermions in second quantization

Babbush, R., Berry, D. W., Kivlichan, I. D., Wei, A. Y., Love, P. J. & Aspuru-Guzik, A., 24 Mar 2016, In : New Journal of Physics. 18, p. 1-17 17 p., 033032.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
fermions
simulation
Taylor series
quantum chemistry
entry

Exponentially more precise quantum simulation of fermions in the configuration interaction representation

Babbush, R., Berry, D. W., Sanders, Y. R., Kivlichan, I. D., Scherer, A., Wei, A. Y., Love, P. J. & Aspuru-Guzik, A., 1 Jan 2018, In : Quantum Science and Technology. 3, 1, p. 1-37 37 p., 015006.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
Fermions
configuration interaction
fermions
Hamiltonians
matrices

Fair-sampling assumption is not necessary for testing local realism

Berry, D. W., Jeong, H., Stobińska, M. & Ralph, T. C., 13 Jan 2010, In : Physical Review A - Atomic, Molecular, and Optical Physics. 81, 1, p. 1-11 11 p., 012109.

Research output: Contribution to journalArticleResearchpeer-review

bells
sampling

Gate-efficient discrete simulations of continuous-time quantum query algorithms

Berry, D. W., Cleve, R. & Gharibian, S., 1 Jan 2014, In : Quantum Information and Computation. 14, 1-2, p. 1-30 30 p.

Research output: Contribution to journalArticleResearchpeer-review

Continuous Time
Hamiltonians
Query
Costs
costs

Hamiltonian Simulation with Nearly Optimal Dependence on all Parameters

Berry, D. W., Childs, A. M. & Kothari, R., 11 Dec 2015, Proceedings - 2015 IEEE 56th Annual Symposium on Foundations of Computer Science, FOCS 2015. Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), p. 792-809 18 p. 7354428

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Hamiltonians
Bessel functions

Heterodyne and adaptive phase measurements on states of fixed mean photon number

Berry, D., Wiseman, H. M. & Zhang, Z. X., 1999, In : Physical Review A - Atomic, Molecular, and Optical Physics. 60, 3, p. 2458-2466 9 p.

Research output: Contribution to journalArticleResearchpeer-review

photons

Higher order decompositions of ordered operator exponentials

Wiebe, N., Berry, D., Høyer, P. & Sanders, B. C., 2010, In : Journal of Physics A: Mathematical and Theoretical. 43, 6, p. 1-20 20 p., 065203.

Research output: Contribution to journalArticleResearchpeer-review

Product formula
Higher Order
Derivatives
Decomposition
decomposition

High-order quantum algorithm for solving linear differential equations

Berry, D. W., 19 Feb 2014, In : Journal of Physics A: Mathematical and Theoretical. 47, 10, p. 1-17 17 p., 105301.

Research output: Contribution to journalArticleResearchpeer-review

Quantum Algorithms
Linear differential equation
Differential equations
differential equations
Higher Order

How to perform the most accurate possible phase measurements

Berry, D. W., Higgins, B. L., Bartlett, S. D., Mitchell, M. W., Pryde, G. J. & Wiseman, H. M., 2009, In : Physical Review A - Atomic, Molecular, and Optical Physics. 80, 5, p. 1-22 22 p., 052114.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
interferometry
scaling
Fisher information
quantum computation
ambiguity

Implementation of multipartite unitary operations with limited resources

Berry, D. W., 30 Mar 2007, In : Physical Review A - Atomic, Molecular, and Optical Physics. 75, 3, p. 1-8 8 p., 032349.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
resources
communication
interactions

Improved Hamiltonian simulation via a truncated Taylor series and corrections

Novo, L. & Berry, D. W., 1 Jun 2017, In : Quantum Information and Computation. 17, 7-8, p. 623-635 13 p.

Research output: Contribution to journalArticleResearchpeer-review

Hamiltonians
Taylor series
Quantum Chemistry
Quantum Algorithms
Mathematical operators

Improved techniques for preparing eigenstates of fermionic Hamiltonians

Berry, D. W., Kieferová, M., Scherer, A., Sanders, Y. R., Low, G. H., Wiebe, N., Gidney, C. & Babbush, R., 2 May 2018, In : Npj quantum information. 4, p. 1-7 7 p., 22.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
eigenvectors
preparation
ground state
quantum chemistry
quantum computation

Improving single photon sources via linear optics and photodetection

Berry, D. W., Scheel, S., Myers, C. R., Sanders, B. C., Knight, P. L. & Laflamme, R., 2004, Proceedings of SPIE Volume 5468: Fluctuations and Noise in Photonics and Quantum Optics II. Heszler, P. (ed.). Bellingham, WA: SPIE, Vol. 5468. p. 232-243 12 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Single Photon Source
Light sources
Optics
Photon
Photons

Improving single photon sources via linear optics and photodetection

Berry, D. W., Scheel, S., Knight, P. L. & Sanders, B. C., Mar 2004, In : Physical Review A - Atomic, Molecular, and Optical Physics. 69, 3, p. 1-4 4 p., 031806.

Research output: Contribution to journalArticleResearchpeer-review

Light sources
Optics
Photons
optics
photons