Zobrazeno 1 - 10
of 365
pro vyhledávání: '"Ralph, T. C."'
Due to turbulence and tracking errors, free-space optical channels involving mobile transceivers are characterized by a signal's partial loss or complete erasure. This work presents an error correction protocol capable of protecting a signal passing
Externí odkaz:
http://arxiv.org/abs/2303.06773
Autor:
Xing, Wanli, Ralph, T. C.
Publikováno v:
Phys Rev A, 107, 023712 (2023)
We derive analytic solutions for Heisenberg evolution under the trilinear parametric Hamiltonian which are correct to second order in the interaction strength but are valid for all pump amplitudes. The solutions allow pump depletion effects to be inc
Externí odkaz:
http://arxiv.org/abs/2201.01372
Autor:
Chrzanowski, H. M., Assad, S. M., Bernu, Julien, Hage, Boris, Lund, A. P., Ralph, T. C., Lam, P. K., Symul, T.
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics 46, no. 10 (2013): 104009
We experimentally demonstrate the reconstruction of a photon number conditioned state without using a photon number discriminating detector. By using only phase randomized homodyne measurements, we reconstruct up to the three photon subtracted squeez
Externí odkaz:
http://arxiv.org/abs/2107.12118
Autor:
Ralph, T. C., Chang, Chris
Publikováno v:
Phys. Rev. D, 102, 124013 (2020)
We present a global metric describing closed timelike curves embedded in Minkowski spacetime. Physically, the metric represents an Alcubierre warp drive on a rotating platform. The physical realizability of such a metric is uncertain due to the exoti
Externí odkaz:
http://arxiv.org/abs/2007.14627
Autor:
Chen, S. Y., Ralph, T. C.
Publikováno v:
Phys. Rev. A 99, 023803 (2019)
The precise estimation of the gravitational acceleration is important for various disciplines. We consider making such an estimation using quantum optics. A Mach-Zehnder interferometer in an "optical fountain" type arrangement is considered and used
Externí odkaz:
http://arxiv.org/abs/1807.10405
Publikováno v:
Phys. Rev. A 96, 022301 (2017)
BosonSampling is a quantum mechanical task involving Fock basis state preparation and detection and evolution using only linear interactions. A classical algorithm for producing samples from this quantum task cannot be efficient unless the polynomial
Externí odkaz:
http://arxiv.org/abs/1705.06041
Publikováno v:
npj Quantum Information (2017) 3:15
There is a large body of evidence for the potential of greater computational power using information carriers that are quantum mechanical over those governed by the laws of classical mechanics. But the question of the exact nature of the power contri
Externí odkaz:
http://arxiv.org/abs/1702.03061
Autor:
Johnson, Sarah J., Lance, Andrew M., Ong, Lawrence, Shirvanimoghaddam, Mahyar, Ralph, T. C., Symul, Thomas
The maximum operational range of continuous variable quantum key distribution protocols has shown to be improved by employing high-efficiency forward error correction codes. Typically, the secret key rate model for such protocols is modified to accou
Externí odkaz:
http://arxiv.org/abs/1605.04663
Publikováno v:
Phys. Rev. A 93, 052310 (2016)
We construct an amplifier that interpolates between a nondeterministic, immaculate linear amplifier and a deterministic, ideal linear amplifier and beyond to nonideal linear amplifiers. The construction involves cascading an immaculate linear amplifi
Externí odkaz:
http://arxiv.org/abs/1603.03150
Autor:
Su, Daiqin, Ralph, T. C.
Publikováno v:
Phys. Rev. D 93, 044023 (2016)
We show that the particle-number distribution of diamond modes, modes that are localized in a finite space-time region, are thermal for the Minkowski vacuum state of a massless scalar field, an analogue to the Unruh effect. The temperature of the dia
Externí odkaz:
http://arxiv.org/abs/1507.00423