# Dr Syed Assad

Department | Quantum Science & Technology |
---|---|

Research group | Quantum optics group |

Office phone | (02) 612 57994 |

Office | Physics New 2 41 |

## arXiv pre-prints

LorcÃ¡n O. Conlon, Jun Suzuki, Ping Koy Lam, Syed M. Assad

arXiv:2208.07386v2

*The gap persistence theorem for quantum multiparameter estimation*arXiv:2208.07386v2

Conlon L, Michel T, Guccione G, RSD S, McKenzie K, Assad S, Lam P

arXiv:2109.07666v2

*Enhancing the precision limits of interferometric satellite geodesy missions***npj Microgravity 8**(2022)arXiv:2109.07666v2

Chrzanowski H, Assad S, Bernu J, Hage B, Lund A, Ralph T, Lam P, Symul T

arXiv:2107.12118v2

*Reconstruction of photon number conditioned states using phase randomized homodyne measurements***Journal of Physics B: Atomic, Molecular and Optical Physics 46**(2013) 104009 (10)arXiv:2107.12118v2

Conlon L, Suzuki J, Lam P, Assad S

arXiv:2008.02612v2

*Efficient computation of the Nagaoka--Hayashi bound for multi-parameter estimation with separable measurements***NPJ Quantum Information 7**(2021)arXiv:2008.02612v2

Bradshaw M, Conlon L, Tserkis S, Gu M, Lam P, Assad S

arXiv:2010.09156v2

*Optimal probes for continuous variable quantum illumination***Physical Review A 103**(2021)arXiv:2010.09156v2

Narasimhachar V, Assad S, Binder F, Thompson J, Yadin B, Gu M

arXiv:1909.07364v2

*Thermodynamic resources in continuous-variable quantum systems***NPJ Quantum Information 7**(2021)arXiv:1909.07364v2

Tserkis S, Thompson J, Lund A, Lam P, Ralph T, Gu M, Assad S

arXiv:2004.13948v4

*Maximum entanglement of formation for a two-mode Gaussian state over passive operations***Physical Review A 102**(2020)arXiv:2004.13948v4

Assad S, Gu M, Li X, Lam P

arXiv:2004.03105v2

*Decoupling Cross-Quadrature Correlations using Passive Operations***Physical Review A 102**(2020) 1-4arXiv:2004.03105v2

Assad S, Li J, Liu Y, Zhao N, Zhao W, Lam P, Qu Z, Li X

arXiv:2003.07095v2

*Accessible precisions for estimating two conjugate parameters using Gaussian probes***Physical Review Research 2**(2020)arXiv:2003.07095v2

Truong N, Haw J, Assad S, Lam P, Kavehei O

arXiv:1905.02342v2

*Machine Learning Cryptanalysis of a Quantum Random Number Generator***IEEE Transactions on Information Forensics and Security 14**(2019) 403-414arXiv:1905.02342v2

Michel T, Haw J, Marangoni D, Thearle O, Vallone G, Villoresi P, Lam P, Assad S

arXiv:1903.01071v1

*Real-Time Source Independent Quantum Random Number Generator with Squeezed States***Physical Review Applied 12**(2019)arXiv:1903.01071v1

Bradshaw M, Lam P, Assad S

arXiv:1811.08066v1

*Gaussian multipartite quantum discord from classical mutual information***Journal of Physics B: Atomic, Molecular and Optical Physics 52**(2019) 1-10arXiv:1811.08066v1

Bradshaw M, Assad S, Haw J, Tan S, Lam P, Gu M

arXiv:1611.10020v2

*Overarching framework between Gaussian quantum discord and Gaussian quantum illumination***Physical Review A: Atomic, Molecular and Optical Physics 95**(2017) 1-10pparXiv:1611.10020v2

Assad S, Bradshaw M, Lam P

arXiv:1608.01777v2

*Phase Estimation of Coherent States with a Noiseless Linear Amplifier***International Journal of Quantum Information 15**(2017) 1-10pp.arXiv:1608.01777v2

Assad S, Thearle O, Lam P

arXiv:1607.00471v1

*Maximizing device-independent randomness from a Bell experiment by optimizing the measurement settings***Physical Review A: Atomic, Molecular and Optical Physics 94**(2016) 1-6arXiv:1607.00471v1

Thearle O, Assad S, Symul T

arXiv:1508.04859v2

*Estimation of Output Channel Noise for Continuous Variable Quantum Key Distribution***Physical Review A - Atomic, Molecular, and Optical Physics 93**(2016) 1-6pparXiv:1508.04859v2

Haw J, Assad S, Lance A, Ng N, Sharma V, Lam P, Symul T

arXiv:1411.4512v2

*Maximization of Extractable Randomness in a Quantum Random-Number Generator***Physical Review Applied 3**(2015) 1-12pparXiv:1411.4512v2

Symul T, Assad S, Lam P

arXiv:1107.4438v1

*Real time demonstration of high bitrate quantum random number generation with coherent laser light***Applied Physics Letters 98**(2011) 3arXiv:1107.4438v1

## Publications

### Journal article

Shajilal B, Huntington E, Lam P, Assad S

*A new entropic quantum correlation measure for adversarial systems***Scientific Reports 13**, 1(2023)
Conlon L, Vogl T, Lam P, Assad S

*Approaching optimal entangling collective measurements on quantum computing platforms***Nature Physics**(2023)
Shajilal B, Shajilal B, Thearle O, Thearle O, Tranter A, Tranter A, Lu Y, Huntington E, Lu Y, Huntington E, Huntington E, Assad S, Huntington E, Assad S, Assad S, Assad S, Lam P, Janousek J, Lam P, Janousek J, Janousek J, Janousek J

*12.6 dB squeezed light at 1550 nm from a bow-tie cavity for long-term high duty cycle operation***Optics Express 30**, 21(2022) 37213-37223
Assad S

*Resource-efficient high-dimensional subspace teleportation with a quantum autoencoder***Science Advances 8**, 40(2022) eabn9783
Conlon L, Michel T, Guccione G, RSD S, McKenzie K, Assad S, Lam P

*Enhancing the precision limits of interferometric satellite geodesy missions***npj Microgravity 8**, 1(2022)
Narasimhachar V, Assad S, Binder F, Thompson J, Yadin B, Gu M

*Thermodynamic resources in continuous-variable quantum systems***NPJ Quantum Information 7**, 9(2021)
Conlon L, Suzuki J, Lam P, Assad S

*Efficient computation of the Nagaoka-Hayashi bound for multi-parameter estimation with separable measurements***NPJ Quantum Information 7**, 110(2021)
Bradshaw M, Conlon L, Tserkis S, Gu M, Lam P, Assad S

*Optimal probes for continuous-variable quantum illumination***Physical Review A 103**, 6(2021)
Conlon L, Suzuki J, Lam P, Assad S

*Efficient computation of the Nagaoka-Hayashi bound for multi-parameter estimation with separable measurements***NPJ Quantum Information 7**, 1(2021)
Assad S, Li J, Liu Y, Zhao N, Zhao W, Lam P, Qu Z, Li X

*Accessible precisions for estimating two conjugate parameters using Gaussian probes***Physical Review Research 2**, 2(2020)
Tserkis S, Thompson J, Lund A, Lam P, Ralph T, Gu M, Assad S

*Maximum entanglement of formation for a two-mode Gaussian state over passive operations***Physical Review A 102**, 5(2020)
Zhao J, Liu K, Jeng H, Gu M, Thompson J, Lam P, Assad S

*A high-fidelity heralded quantum squeezing gate***Nature Photonics**(2020)
Assad S, Gu M, Li X, Lam P

*Decoupling cross-quadrature correlations using passive operations***Physical Review A 102**, Online(2020) 1-4
Truong N, Haw J, Assad S, Lam P, Kavehei O

*Machine Learning Cryptanalysis of a Quantum Random Number Generator***IEEE Transactions on Information Forensics and Security 14**, 2(2019) 403-414
Zhang G, Haw J, Cai H, Xu F, Assad S, Fitzsimons J, Zhou X, Zhang Y, Yu S, Wu J, Ser W, Kwek L

*An integrated silicon photonic chip platform for continuous-variable quantum key distribution***Nature Photonics 13**, 12(2019) 839-842
Michel T, Haw J, Marangoni D, Thearle O, Vallone G, Villoresi P, Lam P, Assad S

*Real-Time Source-Independent Quantum Random-Number Generator with Squeezed States***Physical Review Applied 12**, 3(2019)
Jeng H, Tserkis S, Haw J, Chrzanowski H, Janousek J, Ralph T, Assad S, Lam P

*Entanglement properties of a measurement-based entanglement distillation experiment***Physical Review A 99**, 4(2019) 042304: 1-11
Bradshaw M, Lam P, Assad S

*Gaussian multipartite quantum discord from classical mutual information***Journal of Physics B: Atomic, Molecular and Optical Physics 52**, 24(2019) 1-10
Bradshaw M, Lam P, Assad S

*Ultimate precision of joint quadrature parameter estimation with a Gaussian probe***Physical Review A: Atomic, Molecular and Optical Physics 97**, 1(2018) 11
Liu Y, Li J, Cui L, Huo N, Assad S, Li X, Ou Z

*Loss-tolerant quantum dense metrology with SU(1,1) interferometer***Optics Express 26**, 21(2018) 27705-27715
Thearle O, Janousek J, Armstrong S, Hosseini S, Schünemann M, Assad S, Symul T, James M, Huntington E, Ralph T, Lam P

*Violation of Bell's Inequality Using Continuous Variable Measurements***Physical Review Letters 120**, 4(2018) 1-5
Li J, Liu Y, Cui L, Huo N, Assad S, Li X, Ou Z

*Joint measurement of multiple noncommuting parameters***Physical Review A 97**, 5(2018) 1-11
Assad S, Bradshaw M, Lam P

*Phase estimation of coherent states with a noiseless linear amplifier***International Journal of Quantum Information 15**, 1(2017) 1-10.
Bradshaw M, Assad S, Lam P

*A tight Cram?r?Rao bound for joint parameter estimation with a pure two-mode squeezed probe***Physics Letters A 381**, 32(2017) 2598-2607
Bradshaw M, Assad S, Haw J, Tan S, Lam P, Gu M

*Overarching framework between Gaussian quantum discord and Gaussian quantum illumination***Physical Review A: Atomic, Molecular and Optical Physics 95**, 2(2017) 1-10
Zhao J, Dias J, Haw J, Symul T, Bradshaw M, Blandino R, Ralph T, Assad S, Lam P

*Quantum enhancement of signal-to-noise ratio with a heralded linear amplifier***Optica 4**, 11(2017) 1421-1428
Zhao J, Haw J, Symul T, Lam P, Assad S

*Characterization of a measurement-based noiseless linear amplifier and its applications***Physical Review A - Atomic, Molecular, and Optical Physics 96**, 1(2017) 012319, 1-12
Haw J, Zhao J, Dias J, Assad S, Bradshaw M, Blandino R, Symul T, Ralph T, Lam P

*Surpassing the no-cloning limit with a heralded hybrid linear amplifier for coherent states***Nature Communications 7**(2016) 13222-13222
Assad S, Thearle O, Lam P

*Maximizing device-independent randomness from a Bell experiment by optimizing the measurement settings***Physical Review A: Atomic, Molecular and Optical Physics 94**, 1(2016) 1-6
Thearle O, Assad S, Symul T

*Estimation of output-channel noise for continuous-variable quantum key distribution***Physical Review A - Atomic, Molecular, and Optical Physics 93**, 4(2016) 1-6
Walk N, Hosseini S, Geng J, Thearle O, Haw J, Armstrong S, Assad S, Janousek J, Ralph T, Symul T, Wiseman H, Lam P

*Experimental demonstration of Gaussian protocols for one-sided device-independent quantum key distribution***Optica 3**, 6(2016) 634-642
Haw J, Assad S, Lance A, Ng N, Sharma V, Lam P, Symul T

*Maximization of extractable randomness in a quantum random-number generator***Physical Review Applied 3**, 5(2015) 1-12
Shen Y, Assad S, Grosse N, Li X, Reid M, Lam P

*Nonlinear Entanglement and its Application to Generating Cat States***Physical Review Letters 114**, 10(2015) 1-5
Yuan X, Assad S, Thompson J, Haw J, Vedral V, Ralph T, Lam P, Weedbrook C, Gu M

*Replicating the benefits of Deutschian closed timelike curves without breaking causality***NPJ Quantum Information 1**(2015) 15007 5
Haw J, Assad S, Lance A, Ng N, Sharma V, Lam P, Symul T

*Maximization of extractable randomness in a quantum random-number generator***Physical Review Applied 3**, 5(2015) 1-12
Assad S, Kalev A

*Encoding secret information in measurement settings***International Journal of Quantum Information 12**, 3(2014)
Chrzanowski H, Walk N, Assad S, Janousek J, Hosseini S, Ralph T, Symul T, Lam P

*Measurement-based noiseless linear amplification for quantum communication***Nature Photonics 8**, 4(2014) 333-338
Geng J, Campbell G, Bernu J, Higginbottom D, Sparkes B, Assad S, Zhang W, Robins N, Lam P, Buchler B

*Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth***New Journal of Physics 16**(2014) 113053/1-11
Hosseini S, Rahimi-Keshari S, Haw J, Assad S, Chrzanowski H, Janousek J, Symul T, Ralph T, Lam P

*Experimental verification of quantum discord in continuous-variable states***Journal of Physics B: Atomic, Molecular and Optical Physics 47**, 2(2014) 1-8
Chrzanowski H, Assad S, Bernu J, Hage B, Lund A, Ralph T, Lam P, Symul T

*Reconstruction of photon number conditioned states using phase randomized homodyne measurements***Journal of Physics B: Atomic, Molecular and Optical Physics 46**, 10(2013) 104009 10
Gu M, Chrzanowski H, Assad S, Symul T, Modi K, Ralph T, Vedral V, Lam P

*Observing the operational significance of discord consumption***Nature Physics 8**, 9(2012) 671-675
Symul T, Assad S, Lam P

*Real time demonstration of high bitrate quantum random number generation with coherent laser light***Applied Physics Letters 98**, 23(2011) 3
Grosse N, Mehmet M, Assad S, Schnabel R, Symul T, Lam P

*Observation of Entanglement between Two Light Beams Spanning an Octave in Optical Frequency***Physical Review Letters 100**, 243601 (2008)(2008) 4
Symul T, Alton D, Assad S, Lance A, Weedbrook C, Ralph T, Lam P

*Experimental demonstration of post-selection-based continuous-variable quantum key distribution in the presence of Gaussian noise***Physical Review A: Atomic, Molecular and Optical Physics 76**(2007) 030303/1-4
Assad S

*Dynamical features of deoxyribonucleic acid and configuration transition in the transcription process***Journal of Physics: Condensed Matter 18**, 39(2006) 9007-9030
Assad S

*Statistical equilibrium distributions of baroclinic vortices in a rotating two-layer model at low Froude numbers***Geophysical and Astrophysical Fluid Dynamics 100**, 6(2006) 503-524
Assad S

*Raw-data attacks in Quantum cryptography with partial tomography***International Journal of Quantum Information 4**, 6(2006) 1003-1012
Assad S

*Statistical equilibrium of the coulomb/vortex gas on the unbounded 2-dimensional plane***Discrete and Continuous Dynamical Systems - Series B 5**, 1(2005) 1-14
Assad S

*Self containment radius for rotating planar flows, single-signed vortex gas and electron plasma***Regular and Chaotic Dynamics 10**, 3(2005) 239-255
Assad S

*Monte-Carlo and polyhedron-based simulations I: Extremal states of the logarithmic n-body problem on a sphere***Discrete and Continuous Dynamical Systems - Series B 3**, 3(2003) 313-342
Assad S

*A Monte Carlo algorithm for free and coaxial ring extremal states of the vortex N -body problem on a sphere***Physica A: Statistical mechanics and its applications 328**, 1-2(2003) 53-96(51 publications)

### Conference paper

Haw J, Truong N, Hong Jie Ng H, Ho R, Assad S, Wang C, Lam P, Kavehei O

*Benchmarking a Quantum Random Number Generator with Machine Learning***Quantum Information and Measurement 2021 ?**, ?(2021)
Michel T, Haw J, Marangon D, Thearle O, Vallone G, Villoresi P, Lam P, Assad S

*Real-Time Self-Testing Quantum Random Number Generator with Non-classical States***European Conference on Optical Communication (ECOC) ?**, ?(2020) 1-4
Liu Y, Li J, Li X, Ou Z, Assad S

*Quantum metrology in the joint measurement of multiple parameters encoded in non-commuting observables with SU(1,1) interferometer***Frontiers in Optics, FiO 2017 ?**, ?(2017) 1-2
Chrzanowski H, Gu M, Assad S, Symul T, Modi K, Ralph T, Vedral V, Lam P

*Discord as a quantum resource for bi-partite communication***11th International Conference on Quantum Communication, Measurement and Computation, QCMC 2012 ?**, ?(2014) 116-118
Chrzanowski H, Walk N, Haw J, Thearle O, Assad S, Janousek J, Hosseini S, Ralph T, Symul T, Lam P

*Measurement-based noiseless linear amplification for quantum communication***Quantum and Nonlinear Optics III ?**, ?(2014)
Hosseini S, Rahimi-Keshari S, Haw J, Assad S, Chrzanowski H, Janousek J, Symul T, Lam P, Ralph T, Gu M, Modi K, Vedral V

*Experimental verification of quantum discord in continuousvariable states and operational significance of discord consumption***OSA CLEO: QELS_Fundamental Science, CLEO_QELS 2014 ?**, ?(2014) 2
Gu M, Chrzanowski H, Assad S, Symul T, Modi K, Ralph T, Vedral V, Lam P

*Discord as a Consumable Resource***10th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2013 ?**, ?(2013) 1-4
Janousek J, Chrzanowski H, Hosseini S, Assad S, Symul T, Walk N, Ralph T, Lam P

*Virtual Noiseless Amplification***Conference on Lasers and Electro-Optics-Int Quantum Electronics Conference CLEO_Europe_IQEC 2013 ?**, ?(2013) 1
Lam P, Hosseini M, Campbell G, Pinel O, Sparkes B, Twamley J, Rebic S, Chrzanowski H, Assad S, Bernu J, Ralph T, Walk N, Symul T, Buchler B

*Building a quantum repeater with quantum memories and noiseless amplifiers***10th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2013 ?**, ?(2013)(11 publications)

### Conference written presentation

(1 publications)

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