Zobrazeno 1 - 10
of 399
pro vyhledávání: '"Teh R"'
Publikováno v:
Phys. Rev. Research 2, 043387 (2020)
A cat-state is a superposition of two coherent states with amplitudes $\alpha_{0}$ and $-\alpha_{0}$. Recent experiments create cat states in a microwave cavity field using superconducting circuits. As with degenerate parametric oscillation (DPO) in
Externí odkaz:
http://arxiv.org/abs/2006.12725
Autor:
Teh, R. Y., Sun, F. -X., Polkinghorne, R. E. S., He, Q. Y., Gong, Q., Drummond, P. D., Reid, M. D.
Publikováno v:
Phys. Rev. A 101, 043807 (2020)
A cat-state is formed as the steady-state solution for the signal mode of an ideal, degenerate parametric oscillator, in the limit of negligible single-photon signal loss. In the presence of the signal loss, this is no longer true over timescales muc
Externí odkaz:
http://arxiv.org/abs/1910.01298
Autor:
Teh, R. Y., Reid, M. D.
Publikováno v:
Phys. Rev. A 100, 022126 (2019)
We derive conditions in the form of inequalities to detect the genuine $N$-partite entanglement of $N$ systems. The inequalities are expressed in terms of variances of spin operators, and can be tested by local spin measurements performed on the indi
Externí odkaz:
http://arxiv.org/abs/1904.12121
Autor:
Opanchuk, B., Rosales-Zárate, L., Teh, R. Y., Dalton, B. J., Sidorov, A., Drummond, P. D., Reid, M. D.
Publikováno v:
Phys. Rev. A 100, 060102 (2019)
Using criteria based on superselection rules, we analyze the quantum correlations between the two condensate modes of the Bose-Einstein condensate interferometer of Egorov et al. [Phys. Rev. A 84, 021605 (2011)]. In order to determine the two-mode co
Externí odkaz:
http://arxiv.org/abs/1811.01387
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Publikováno v:
Phys. Rev. A 98, 063814 (2018)
We analyze a method for the creation, storage and retrieval of optomechanical Schrodinger cat states, in which there is a quantum superposition of two distinct macroscopic states of a mechanical oscillator. In the proposal, an optical cat state is fi
Externí odkaz:
http://arxiv.org/abs/1809.00608
We consider three modes $A$, $B$ and $C$ and derive continuous variable monogamy inequalities that constrain the distribution of bipartite entanglement amongst the three modes. The inequalities hold for all such tripartite states, without the assumpt
Externí odkaz:
http://arxiv.org/abs/1612.05727
Publikováno v:
Phys. Rev. Lett. 119, 023601 (2017)
A strategy for generating entanglement in two separated optomechanical oscillators is analysed, using entangled radiation produced from downconversion and stored in an initiating cavity. We show that the use of pulsed entanglement with optimally shap
Externí odkaz:
http://arxiv.org/abs/1611.09903
Publikováno v:
Phys. Rev. A 94, 062125 (2016)
We examine how to signify and quantify the mesoscopic quantum coherence of approximate two-mode NOON states and spin-squeezed two-mode Bose-Einstein condensates (BEC). We identify two criteria that verify a nonzero quantum coherence between states wi
Externí odkaz:
http://arxiv.org/abs/1609.06028
Publikováno v:
Phys. Rev. A 94, 042119 (2016)
We construct Einstein-Podolsky-Rosen (EPR) steering signatures for the nonlocality of the entangled superposition state described by $\frac{1}{\sqrt{2}}\{|N\rangle|0\rangle+|0\rangle|N\rangle\}$, called the two-mode NOON state. The signatures are a v
Externí odkaz:
http://arxiv.org/abs/1605.00221