Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Brown, Eric G."'
Quantum Amplitude Estimation (QAE) -- a technique by which the amplitude of a given quantum state can be estimated with quadratically fewer queries than by standard sampling -- is a key sub-routine in several important quantum algorithms, including G
Externí odkaz:
http://arxiv.org/abs/2006.14145
Publikováno v:
New Journal of Physics 20, 043034 (2018)
We study a driven harmonic oscillator operating an Otto cycle between two thermal baths of finite size. By making extensive use of the tools of Gaussian quantum mechanics, we directly simulate the dynamics of the engine as a whole, without the need t
Externí odkaz:
http://arxiv.org/abs/1708.06363
Publikováno v:
New J. Phys. 18, 113028 (2016)
Quantum states that can yield work in a cyclical Hamiltonian process form one of the primary resources in the context of quantum thermodynamics. Conversely, states whose average energy cannot be lowered by unitary transformations are called passive.
Externí odkaz:
http://arxiv.org/abs/1608.04977
Autor:
Brown, Eric G., Louko, Jorma
Publikováno v:
JHEP 1508 (2015) 061
We present and utilize a simple formalism for the smooth creation of boundary conditions within relativistic quantum field theory. We consider a massless scalar field in $(1+1)$-dimensional flat spacetime and imagine smoothly transitioning from there
Externí odkaz:
http://arxiv.org/abs/1504.05269
Publikováno v:
Phys. Rev. D 91, 016005 (2015)
It is well known that the vacuum state of a quantum field is spatially entangled. This is true both in free and confined spaces, for example in an optical cavity. The obvious consequence of this, however, is surprising and intuitively challenging; na
Externí odkaz:
http://arxiv.org/abs/1409.4203
Autor:
Brown, Eric G., Donnelly, William, Kempf, Achim, Mann, Robert B., Martin-Martinez, Eduardo, Menicucci, Nicolas C.
Publikováno v:
New J. Phys. 16, 105020 (2014)
We propose a quantum mechanical method of detecting weak vibrational disturbances inspired by the protocol of entanglement farming. We consider a setup where pairs of atoms in their ground state are successively sent through an optical cavity. It is
Externí odkaz:
http://arxiv.org/abs/1407.0071
Publikováno v:
Phys. Rev. A 90, 032316 (2014)
We demonstrate and characterize the extraction of genuine tripartite entanglement from the vacuum of a periodic cavity field. That is, three probe quantum systems (detectors) can become both bipartitely and tripartitely entangled without coming into
Externí odkaz:
http://arxiv.org/abs/1405.4449
Autor:
Brown, Eric G.
Publikováno v:
Phys. Rev. A 88, 062336 (2013)
We study the harvesting of quantum and classical correlations from a hot scalar field in a periodic cavity by a pair of spatially separated oscillator-detectors. Specifically, we utilize non-perturbative and exact (non-numerical) techniques to solve
Externí odkaz:
http://arxiv.org/abs/1309.1425
Publikováno v:
Phys. Rev. A 88, 052310 (2013)
We propose a protocol by which entanglement can be extracted repeatedly from a quantum field. In analogy with prior work on entanglement harvesting, we call this protocol entanglement farming. It consists of successively sending pairs of unentangled
Externí odkaz:
http://arxiv.org/abs/1309.1090
Publikováno v:
Phys. Rev. D 88, 064031 (2013)
We explore the effects of different boundary conditions and coupling schemes on the response of a particle detector undergoing uniform acceleration in optical cavities. We analyze the thermalization properties of the accelerated detector via non-pert
Externí odkaz:
http://arxiv.org/abs/1307.3335