658 citations · 3.2k across the 28 of their papers we have counts for
6 papers · 2 filters
On Secure Quantum Key Distribution Using Continuous Variables of Single Photons
Lijian Zhang, Christine Silberhorn, Ian A. Walmsley
We analyse the distribution of secure keys using quantum cryptography based on the continuous variable degree of freedom of entangled photon pairs. We derive the information capaci…
Heralded Generation of Ultrafast Single Photons in Pure Quantum States
Peter J. Mosley, Jeff S. Lundeen, Brian J. Smith +4
We present an experimental demonstration of heralded single photons prepared in pure quantum states from a parametric downconversion source. It is shown that, through controlling t…
Creating diamond color centers for quantum optical applications
F. C. Waldermann, P. Olivero, J. Nunn +10
Nitrogen vacancy (NV) centers in diamond have distinct promise as solid-state qubits. This is because of their large dipole moment, convenient level structure and very long room-te…
Efficient spatially-resolved multimode quantum memory
K. Surmacz, J. Nunn, F. C. Waldermann +4
We propose a method that enables efficient storage and retrieval of a photonic excitation stored in an ensemble quantum memory consisting of Lambda-type absorbers with non-zero Sto…
Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber
K. Garay-Palmett, H. J. McGuinness, Offir Cohen +7
We study theoretically the generation of photon pairs by spontaneous four-wave mixing (SFWM) in photonic crystal optical fiber. We show that it is possible to engineer two-photon s…
Mapping broadband single-photon wavepackets into an atomic memory
J. Nunn, I. A. Walmsley, M. G. Raymer +4
We analyze a quantum optical memory based on the off-resonant Raman interaction of a single broadband photon, copropagating with a classical control pulse, with an atomic ensemble.…