Quantum noise properties of multiphoton transitions in driven nonlinear resonators
... these amplifying devices mostly operate in the semiclassical regime where many quanta in the resonator are excited. This implies that pure quantum fluctuations are typically small on average. Nevertheless, some experiments have been realized at low temperature where the relevant fluctuations are qua ...
... these amplifying devices mostly operate in the semiclassical regime where many quanta in the resonator are excited. This implies that pure quantum fluctuations are typically small on average. Nevertheless, some experiments have been realized at low temperature where the relevant fluctuations are qua ...
Electric fields and quantum wormholes
... with ΦΔ the electric flux through the wormhole. This quantity clearly measures fluctuations of the flux, and we show below that through linear response it also determines the flux obtained when a potential difference is applied across the wormhole. This susceptibility is a particular measure of elec ...
... with ΦΔ the electric flux through the wormhole. This quantity clearly measures fluctuations of the flux, and we show below that through linear response it also determines the flux obtained when a potential difference is applied across the wormhole. This susceptibility is a particular measure of elec ...
Dephasing and the Orthogonality Catastrophe in Tunneling through a Quantum... The “Which Path?” Interferometer
... of decoherence in mesoscopic structures. Recent work in atomic physics has measured decoherence rates of the electromagnetic field in a cavity [4]. These experiments, however, did not control the rate of dephasing. An Aharonov-Bohm ring with a QD in one of its arms offers the ability not only to mea ...
... of decoherence in mesoscopic structures. Recent work in atomic physics has measured decoherence rates of the electromagnetic field in a cavity [4]. These experiments, however, did not control the rate of dephasing. An Aharonov-Bohm ring with a QD in one of its arms offers the ability not only to mea ...
Quantum Computing with Majorana Fermions Coupled to
... Multi-bit gates, on the other hand, act on multiple bits. An example is the AND-gate, which performs the transformations AN D ...
... Multi-bit gates, on the other hand, act on multiple bits. An example is the AND-gate, which performs the transformations AN D ...
Probing exciton localization in nonpolar GaN/AlN quantum dots by
... 0.3 meV around 4 eV兲, and detected by a liquid-nitrogencooled charge coupled device camera. The photoluminescence of the smallest mesas presents isolated sharp lines in the high-energy tail of the quantum dot distribution 共⬎3.8 eV兲, but for reasons that are still not fully understood, we could not f ...
... 0.3 meV around 4 eV兲, and detected by a liquid-nitrogencooled charge coupled device camera. The photoluminescence of the smallest mesas presents isolated sharp lines in the high-energy tail of the quantum dot distribution 共⬎3.8 eV兲, but for reasons that are still not fully understood, we could not f ...
EXPONENTIAL SEPARATION OF QUANTUM AND CLASSICAL
... than the randomized one remained open. We resolve this in the affirmative, by exhibiting a problem for which the quantum complexity is exponentially smaller than the randomized one. 1.1. Related work. The area of quantum communication complexity was introduced by Yao [25]. Since then, a series of pa ...
... than the randomized one remained open. We resolve this in the affirmative, by exhibiting a problem for which the quantum complexity is exponentially smaller than the randomized one. 1.1. Related work. The area of quantum communication complexity was introduced by Yao [25]. Since then, a series of pa ...
Quantum error correction
... Assuming errors on different bits are independent from each other the probability of getting no flip errors is (1−p)3 , the probability of one flip is 3(1−p)2 p, the probability of two flips is 3(1 − p)p2 and probability of getting an error on all the bits is p3 . We decode the output states by a ma ...
... Assuming errors on different bits are independent from each other the probability of getting no flip errors is (1−p)3 , the probability of one flip is 3(1−p)2 p, the probability of two flips is 3(1 − p)p2 and probability of getting an error on all the bits is p3 . We decode the output states by a ma ...
Order by disorder in a four-flavor Mott insulator on the fcc lattice
... symmetric Mott insulators are ultracold atoms on optical lattices [7], where an elaborate control over almost every single parameter of the model system is routinely utilized. The atoms are trapped optically; both the potential height and the lattice periodicity can be adjusted by tuning the amplitu ...
... symmetric Mott insulators are ultracold atoms on optical lattices [7], where an elaborate control over almost every single parameter of the model system is routinely utilized. The atoms are trapped optically; both the potential height and the lattice periodicity can be adjusted by tuning the amplitu ...
“Formal” vs. “Empirical” Approaches to Quantum
... limits he has in mind must be non-singular in order for there to be an accurate quantum description of every real system whose behavior is well-modeled in classical mechanics. The common refrain that classical mechanics should be the limit of quantum mechanics as Planck’s constant vanishes seems to ...
... limits he has in mind must be non-singular in order for there to be an accurate quantum description of every real system whose behavior is well-modeled in classical mechanics. The common refrain that classical mechanics should be the limit of quantum mechanics as Planck’s constant vanishes seems to ...
What Every Physicist Should Know About String Theory
... We have arrived at one of nature’s rhymes: if we imitate in one dimension what we would expect to do in D = 4 dimensions to describe quantum gravity, we arrive at something that is certainly important in physics, namely ordinary quantum field theory in a possibly curved spacetime. In the example th ...
... We have arrived at one of nature’s rhymes: if we imitate in one dimension what we would expect to do in D = 4 dimensions to describe quantum gravity, we arrive at something that is certainly important in physics, namely ordinary quantum field theory in a possibly curved spacetime. In the example th ...
progress in quantum foundations - Department of Computer Science
... containing quantum theory. This allows us to formalize and clarify the different ways in which the world could possibly work and where quantum mechanics fits with respect to these possibilities. Such an analysis of mathematical theories of nature requires a high level of abstraction guided by deep a ...
... containing quantum theory. This allows us to formalize and clarify the different ways in which the world could possibly work and where quantum mechanics fits with respect to these possibilities. Such an analysis of mathematical theories of nature requires a high level of abstraction guided by deep a ...
98, 010506 (2007)
... superfluid in the optical trap is the next natural step. Since ordinary vortices themselves exhibit non-Abelian statistics in this case, they can be created at a low density, allowing, in principle, coherent independent braiding. Finally, as we discuss later, since the atoms, unlike the electrons in ...
... superfluid in the optical trap is the next natural step. Since ordinary vortices themselves exhibit non-Abelian statistics in this case, they can be created at a low density, allowing, in principle, coherent independent braiding. Finally, as we discuss later, since the atoms, unlike the electrons in ...