Publications (11)
Real time demonstration of high bitrate quantum random number generation with coherent laser light
T. Symul, S. M. Assad, P. K. Lam
We present a random number generation scheme that uses broadband measurements of the vacuum field contained in the radio-frequency sidebands of a single-mode laser. Even though the…
Maximization of Extractable Randomness in a Quantum Random-Number Generator
J. Y. Haw, S. M. Assad, A. M. Lance +4
The generation of random numbers via quantum processes is an efficient and reliable method to obtain true indeterministic random numbers that are of vital importance to cryptograph…
Theoretical Analysis of an Ideal Noiseless Linear Amplifier for Einstein-Podolsky-Rosen Entanglement Distillation
J. Bernu, S. Armstrong, T. Symul +2
We study the operational regime of a noiseless linear amplifier based on quantum scissors that can nondeterministically amplify the one photon component of a quantum state with wea…
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…
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…
Continuous Variables (2,3) Threshold Quantum Secret Sharing Schemes
A. M. Lance, T. Symul, W. P. Bowen +3
We present two experimental schemes to perform continuous variable (2,3) threshold quantum secret sharing on the quadratures amplitudes of bright light beams. Both schemes require…
Unity gain and non-unity gain quantum teleportation
W. P. Bowen, N. Treps, B. C. Buchler +4
We investigate continuous variable quantum teleportation. We discuss the methods presently used to characterize teleportation in this regime, and propose an extension of the measur…
A Scalable, Self-Analyzing Digital Locking System for use on Quantum Optics Experiments
B. M. Sparkes, H. M. Chrzanowski, D. P. Parrain +3
Digital control of optics experiments has many advantages over analog control systems, specifically in terms of scalability, cost, flexibility, and the integration of system inform…
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…
Squeezed light from a diamond-turned monolithic cavity
A. Brieussel, Y. Shen, G. Campbell +10
For some crystalline materials, a regime can be found where continuous ductile cutting is feasible. Using precision diamond turning, such materials can be cut into complex optical…
Demonstrating various quantum effects with two entangled laser beams
B. Hage, J. Janoušek, S. Armstrong +5
We report on the preparation of entangled two mode squeezed states of yet unseen quality. Based on a measurement of the covariance matrix we found a violation of the Reid and Drumm…