Surpassing the conventional heisenberg limit using classical resources by Jin, X, Lebrat, M, Zhang, L, Lee, K, Bartley, T, Barbieri, M, Nunn, J, Datta, A, Walmsley, I

“…We report the experimental estimation of the Kerr coefficient of an optical fiber. Using bright classical fields and shot-noise-limited detection, we show the precision scaling of 1=N3=2 in a room-temperature, all-optical system. © 2013 Optical Society of America.…”

Surpassing the conventional heisenberg limit using classical resources by Jin, X, Lebrat, M, Zhang, L, Lee, K, Bartley, T, Barbieri, M, Nunn, J, Datta, A, Walmsley, I

“…We report the experimental estimation of the Kerr coefficient of an optical fiber. Using bright classical fields and shot-noise-limited detection, we show the precision scaling of 1/N3/2 in a room-temperature, all-optical system. © 2013 The Optical Society.…”

Turning classical states quantum with linear optics and photon counting by Bartley, T, Donati, G, Jin, X, Spring, J, Barbieri, M, Smith, B, Datta, A, Zhang, L, Walmsley, I

“…We demonstrate a method to transmute classical light into a quantum state without invoking any nonlinear optical processes. …”

COMPONENTS FOR MULTI-PHOTON NON-CLASSICAL STATE PREPARATION AND MEASUREMENT by Puentes, G, Zhang, L, Coldenstrodt-Ronge, H, Cohen, O, Smith, B, Thomas-Peter, N, Walmsley, I

Turning classical states quantum with linear optics and photon counting by Bartley, T, Donati, G, Jin, X, Spring, J, Barbieri, M, Smith, B, Datta, A, Zhang, L, Walmsley, I

“…We demonstrate a method to transmute classical light into a quantum state without invoking any nonlinear optical processes. …”

Turning classical states quantum with linear optics and photon counting by Bartley, T, Donati, G, Jin, X, Spring, J, Barbieri, M, Smith, B, Datta, A, Zhang, L, Walmsley, I, IEEE

“…We demonstrate a method to transmute classical light into a quantum state without invoking any nonlinear optical processes. …”

Turning classical states quantum with linear optics and photon counting by Bartley, T, Donati, G, Jin, X, Spring, J, Barbieri, M, Smith, B, Datta, A, Zhang, L, Walmsley, I

“…We demonstrate a method to transmute classical light into a quantum state without invoking any nonlinear optical processes. …”

Macroscopic non-classical states and terahertz quantum processing in room-temperature diamond by Lee, K, Sussman, B, Sprague, MR, Michelberger, P, Reim, K, Nunn, J, Langford, N, Bustard, P, Jaksch, D, Walmsley, I

Macroscopic non-classical states and terahertz quantum processing in room-temperature diamond by Lee, K, Sussman, B, Sprague, MR, Michelberger, P, Reim, K, Nunn, J, Langford, N, Bustard, P, Jaksch, D, Walmsley, I

“…The nature of the transition between the familiar classical, macroscopic world and the quantum, microscopic one continues to be poorly understood. …”

Manipulating a non-classical state of light propagating through a multiply scattering medium by Defienne, H, Barbieri, M, Chalopin, B, Chatel, B, Walmsley, I, Smith, B, Gigan, S

“…In this work, we use wavefront shaping methods to control non-classical states of light propagating through a multiply scattering medium. …”

Complete Characterization of Weak-Homodyne Photon-Number-Resolving Detectors: Applications to Non-Classical Photonic State Reconstructions by Coldenstrodt-Ronge, H, Puentes, G, Cohen, O, Noriega, F, Yang, X, Lundeen, J, Smith, B, Walmsley, I, IEEE

Towards storage and retrieval of non-classical light in a broadband quantum memory - An investigation of free-space and cavity Raman memories by Champion, T

“…While the SPDC input photon statistics showed a clear influence on the statistics of the retrieved field, four-wave mixing (FWM) noise, stimulated by spontaneous Raman scattering, prevented the preservation of non-classical photon statistics during read-out.</p> <p>Suppressing this source of noise represents the last remaining challenge for realising a broadband single-photon Raman memory suitable for quantum information applications. …”

Multiphoton quantum interference in a multiport integrated photonic device. by Metcalf, B, Thomas-Peter, N, Spring, J, Kundys, D, Broome, M, Humphreys, P, Jin, X, Barbieri, M, Kolthammer, W, Gates, J, Smith, B, Langford, N, Smith, P, Walmsley, I

“…We introduce a new scheme to verify quantum behaviour, using classically characterised device elements and hierarchies of photon correlation functions. …”

Nonclassicality Criteria in Multiport Interferometry by Rigovacca, L, Di Franco, C, Metcalf, B, Walmsley, I, Kim, M

“…Interference lies at the heart of the behavior of classical and quantum light. It is thus crucial to understand the boundaries between which interference patterns can be explained by a classical electromagnetic description of light and which, on the other hand, can only be understood with a proper quantum mechanical approach. …”

Quantum enhanced precision measurement and information processing with integrated photonics by Thomas-Peter, N

“…A novel tomographic technique will be developed to characterize these states and it will be explicitly demonstrated how it is possible to beat some bounds on classical performance without being able to out-perform a comparable classical system. …”

Approximating vibronic spectroscopy with imperfect quantum optics by Clements, W, Renema, J, Eckstein, A, Valido, A, Lita, A, Gerrits, T, Nam, S, Kolthammer, W, Huh, J, Walmsley, I

“…Our findings will inform the design of future experiments aiming to simulate the spectra of large molecules beyond the reach of current classical computers.…”

Tensor network states in time-bin quantum optics by Lubasch, M, Valido, A, Renema, J, Kolthammer, S, Jaksch, D, Kim, M, Walmsley, I, García-Patrón, R

“…The current shift in the quantum optics community towards experiments with many modes and photons necessitates new classical simulation techniques that efficiently encode many-body quantum correlations and go beyond the usual phase-space formulation. …”

Entangling macroscopic diamonds at room temperature. by Lee, K, Sprague, MR, Sussman, B, Nunn, J, Langford, N, Jin, X, Champion, T, Michelberger, P, Reim, K, England, D, Jaksch, D, Walmsley, I

“…Our results show that entanglement can persist in the classical context of moving macroscopic solids in ambient conditions.…”

Entang-bling: Observing quantum correlations in room-temperature solids by Walmsley, I, Lee, K, Sprague, M, Sussman, B, Nunn, J, Langford, N, Jin, X, Champion, T, Michelberger, P, Reim, K, England, D, Jaksch, D

“…Our results show that entanglement can persist in the classical context of moving macroscopic solids in ambient conditions. © Published under licence by IOP Publishing Ltd.…”

Boson sampling on a photonic chip. by Spring, J, Metcalf, B, Humphreys, P, Kolthammer, W, Jin, X, Barbieri, M, Datta, A, Thomas-Peter, N, Langford, N, Kundys, D, Gates, J, Smith, B, Smith, P, Walmsley, I

“…Although universal quantum computers ideally solve problems such as factoring integers exponentially more efficiently than classical machines, the formidable challenges in building such devices motivate the demonstration of simpler, problem-specific algorithms that still promise a quantum speedup. …”