38 citations · 159 across the 8 of their papers we have counts for
7 papers · 1 filter
Reconstruction of photon number conditioned states using phase randomized homodyne measurements
H. M. Chrzanowski, S. M. Assad, Julien Bernu +5
We experimentally demonstrate the reconstruction of a photon number conditioned state without using a photon number discriminating detector. By using only phase randomized homodyne…
Experimental Verification of Quantum Discord in Continuous-Variable States
S. Hosseini, S. Rahimi-Keshari, J. Y. Haw +6
We introduce a simple and efficient technique to verify quantum discord in unknown Gaussian states and a certain class of non-Gaussian states. We show that any separation in the pe…
Storage and Manipulation of Light Using a Raman Gradient Echo Process
M. Hosseini, B. M. Sparkes, G. T. Campbell +2
The Gradient Echo Memory (GEM) scheme has potential to be a suitable protocol for storage and retrieval of optical quantum information. In this paper, we review the properties of t…
Precision spectral manipulation: a demonstration using a coherent optical memory
B. M. Sparkes, C. Cairns, M. Hosseini +4
The ability to coherently spectrally manipulate quantum information has the potential to improve qubit rates across quantum channels and find applications in optical quantum comput…
Time- and frequency-domain polariton interference
G. T. Campbell, M. Hosseini, B. M. Sparkes +2
We present experimental observations of interference between an atomic spin coherence and an optical field in a Λ-type gradient echo memory. The interference is mediated by a stron…
Photon number discrimination without a photon counter and its application to reconstructing non-Gaussian states
H. M. Chrzanowski, J. Bernu, B. M. Sparkes +5
The non-linearity of a conditional photon-counting measurement can be used to `de-Gaussify' a Gaussian state of light. Here we present and experimentally demonstrate a technique fo…
An AC Stark Gradient Echo Memory in Cold Atoms
B. M. Sparkes, M. Hosseini, G. Hétet +2
The burgeoning fields of quantum computing and quantum key distribution have created a demand for a quantum memory. The gradient echo memory scheme is a quantum memory candidate fo…