151 citations · 606 across the 20 of their papers we have counts for
18 papers · 1 filter
Quantum-Optimal Frequency Estimation of Stochastic AC Fields
Anirban Dey, Sara Mouradian, Cosmo Lupo +1
Resolving frequencies in a time-dependent field is classically limited by the measurement bandwidth. Using tools from quantum metrology and quantum control may overcome this limit,…
Error filtration for quantum sensing via interferometry
Zixin Huang, Cosmo Lupo
Dephasing is a main noise mechanism that afflicts quantum information, it reduces visibility, and destroys coherence and entanglement. Therefore, it must be reduced, mitigated, and…
Imaging stars with quantum error correction
Zixin Huang, Gavin K. Brennen, Yingkai Ouyang
The development of high-resolution, large-baseline optical interferometers would revolutionize astronomical imaging. However, classical techniques are hindered by physical limitati…
Optical quantum super-resolution imaging and hypothesis testing
Ugo Zanforlin, Cosmo Lupo, Peter W. R. Connolly +3
Estimating the angular separation between two incoherent thermal sources is a challenging task for direct imaging, especially when it is smaller than or comparable to the Rayleigh…
Quantum hypothesis testing for exoplanet detection
Zixin Huang, Cosmo Lupo
Detecting the faint emission of a secondary source in the proximity of the much brighter source has been the most severe obstacle for using direct imaging in searching for exoplane…
Experimental implementation of secure anonymous protocols on an eight-user quantum network
Zixin Huang, Siddarth Koduru Joshi, Djeylan Aktas +12
Anonymity in networked communication is vital for many privacy-preserving tasks. Secure key distribution alone is insufficient for high-security communications, often knowing who t…
Quantum-limited estimation of range and velocity
Zixin Huang, Cosmo Lupo, Pieter Kok
The energy-time uncertainty relation puts a fundamental limit on the precision of radars and lidars for the estimation of range and velocity. The precision in the estimation of the…
Fault tolerant quantum data locking
Zixin Huang, Pieter Kok, Cosmo Lupo
Quantum data locking is a quantum communication primitive that allows the use of a short secret key to encrypt a much longer message. It guarantees information-theoretical security…
Photonic quantum data locking
Zixin Huang, Peter P. Rohde, Dominic W. Berry +3
Quantum data locking is a quantum phenomenon that allows us to encrypt a long message with a small secret key with information-theoretic security. This is in sharp contrast with cl…
Ancilla-assisted schemes are beneficial for Gaussian state phase estimation
Zixin Huang, Chiara Macchiavello, Lorenzo Maccone +1
We study interferometry with Gaussian states and show that an ancilla-assisted scheme outperforms coherent state interferometry for all levels of loss. We also compare the ancilla-…
Noise-dependent optimal strategies for quantum metrology
Zixin Huang, Chiara Macchiavello, Lorenzo Maccone
We show that for some noisy channels, the optimal entanglement-assisted strategy depends on the noise level. We note that there is a non-trivial crossover between the parallel-enta…
Experimental ancilla-assisted phase-estimation in a noisy channel
Marco Sbroscia, Ilaria Gianani, Luca Mancino +5
The metrological ability of carefully designed probes can be spoilt by the presence of noisy processes occurring during their evolution. The noise is responsible for altering the e…
Cryptographic quantum metrology
Zixin Huang, Chiara Macchiavello, Lorenzo Maccone
We develop a general framework for parameter estimation that allows only trusted parties to access the result and achieves optimal precision. The protocols are designed such that a…
Beating the Classical Limits of Information Transmission using a Quantum Decoder
Robert J. Chapman, Akib Karim, Zixin Huang +3
Encoding schemes and error-correcting codes are widely used in information technology to improve the reliability of data transmission over real-world communication channels. Quantu…
Adaptive phase estimation with two-mode squeezed-vacuum and parity measurement
Zixin Huang, Keith R. Motes, Petr M. Anisimov +2
A proposed phase-estimation protocol based on measuring the parity of a two-mode squeezed-vacuum state at the output of a Mach-Zehnder interferometer shows that the Cramér-Rao sens…
High-dimensional entanglement certification
Zixin Huang, Lorenzo Maccone, Akib Karim +3
Quantum entanglement is the ability of joint quantum systems to possess global properties (correlation among systems) even when subsystems have no definite individual property. Whi…
Entanglement-assisted quantum metrology
Zixin Huang, Chiara Macchiavello, Lorenzo Maccone
Entanglement-assisted quantum communication employs pre-shared entanglement between sender and receiver as a resource. We apply the same framework to quantum metrology, introducing…
Experimental Perfect Quantum State Transfer
Robert J. Chapman, Matteo Santandrea, Zixin Huang +5
The transfer of data is a fundamental task in information systems. Microprocessors contain dedicated data buses that transmit bits across different locations and implement sophisti…