![Dirac multimode ket-bra operators` [equation]](http://s1.studyres.com/store/data/023088225_1-3900fa8a2c451013a9516ce21d0ecd01-300x300.png)
Dirac multimode ket-bra operators` [equation]
... While we are recalling the theory of integration within normally ordered-, antinormally ordered- and Weyl orderedproduct of operators which respectively lead to normal ordering, antinormal ordering and Weyl ordering [10] of operators after performing the corresponding integration over ket-bras, this ...
... While we are recalling the theory of integration within normally ordered-, antinormally ordered- and Weyl orderedproduct of operators which respectively lead to normal ordering, antinormal ordering and Weyl ordering [10] of operators after performing the corresponding integration over ket-bras, this ...
92, 054101 (2004)
... becomes dominating in the density distribution of noncondensed atoms above the transition point [Fig. 5(d)]. Since the density distribution can be measured in experiment, this effect can be used to identify the transition to instability. Finally, although the above discussions have been focused on a ...
... becomes dominating in the density distribution of noncondensed atoms above the transition point [Fig. 5(d)]. Since the density distribution can be measured in experiment, this effect can be used to identify the transition to instability. Finally, although the above discussions have been focused on a ...
The Quark model
... The quark model is the follow-up to the Eightfold Way classification scheme (proposed by Murray Gell-Mann and Yuval Ne'eman ) The Eightfold Way may be understood as a consequence of flavor symmetries between various kinds of quarks. Since the strong nuclear force affects quarks the same way regardle ...
... The quark model is the follow-up to the Eightfold Way classification scheme (proposed by Murray Gell-Mann and Yuval Ne'eman ) The Eightfold Way may be understood as a consequence of flavor symmetries between various kinds of quarks. Since the strong nuclear force affects quarks the same way regardle ...
Construction X for quantum error-correcting codes
... A quantum error-correcting code (QECC) is a code that protects quantum information from corruption by noise (decoherence) on the quantum channel in a way that is similar to how classical error-correcting codes protect information on the classical channel. We denote by [[n, k, d]] the parameters of a ...
... A quantum error-correcting code (QECC) is a code that protects quantum information from corruption by noise (decoherence) on the quantum channel in a way that is similar to how classical error-correcting codes protect information on the classical channel. We denote by [[n, k, d]] the parameters of a ...
Quantum measurements of coupled systems * L. Fedichkin, M. Shapiro,
... the measured qubit to a two-level detecting system 共DS兲. If the qubit was initially excited and the DS was in the ground state, the excitation can move to the DS. There, its energy will be transferred to the reservoir and the change in the state of the reservoir will be directly detected. For exampl ...
... the measured qubit to a two-level detecting system 共DS兲. If the qubit was initially excited and the DS was in the ground state, the excitation can move to the DS. There, its energy will be transferred to the reservoir and the change in the state of the reservoir will be directly detected. For exampl ...
Building and bounding quantum Bernoulli factories
... A Bernoulli factory formalizes the notion of using one binary random variable (or coin) with unknown distribution to simulate another binary random variable with some desired distribution. This problem has been extensively studied classically, and recently Dale et. al. [1] have defined a quantum gen ...
... A Bernoulli factory formalizes the notion of using one binary random variable (or coin) with unknown distribution to simulate another binary random variable with some desired distribution. This problem has been extensively studied classically, and recently Dale et. al. [1] have defined a quantum gen ...
Quantum and private capacities of low
... Even for the qubit depolarizing channel, which acts as D p (ρ) = (1 − 3 ) ρ + 3 2I , our understanding of the quantum capacity is limited. For p = 0 the channel is perfect, so we have Q(D0 ) = 1, while for p = 1/4, we know that Q(D1/4 ) = 0. However, for 0 < p < 1/4 the quantum capacity of D p is un ...
... Even for the qubit depolarizing channel, which acts as D p (ρ) = (1 − 3 ) ρ + 3 2I , our understanding of the quantum capacity is limited. For p = 0 the channel is perfect, so we have Q(D0 ) = 1, while for p = 1/4, we know that Q(D1/4 ) = 0. However, for 0 < p < 1/4 the quantum capacity of D p is un ...
On High-Efficiency Optical Communication and Key Distribution
... Classical optical communication can be roughly divided into two regimes, according to the number of photons sent per channel use. If this number is high, homodyne or heterodyne detection may be used to effectively transform the channel into an equivalent additive white Gaussian noise (AWGN) channel. ...
... Classical optical communication can be roughly divided into two regimes, according to the number of photons sent per channel use. If this number is high, homodyne or heterodyne detection may be used to effectively transform the channel into an equivalent additive white Gaussian noise (AWGN) channel. ...
On High-Efficiency Optical Communication and Key Distribution
... Classical optical communication can be roughly divided into two regimes, according to the number of photons sent per channel use. If this number is high, homodyne or heterodyne detection may be used to effectively transform the channel into an equivalent additive white Gaussian noise (AWGN) channel. ...
... Classical optical communication can be roughly divided into two regimes, according to the number of photons sent per channel use. If this number is high, homodyne or heterodyne detection may be used to effectively transform the channel into an equivalent additive white Gaussian noise (AWGN) channel. ...
Quantum coding with finite resources
... goals of information theory is to find fundamental limits imposed on any coding scheme that attempts to accomplish this task. Following a tradition going back to Shannon’s groundbreaking work1, this problem is usually studied asymptotically: the quantum capacity of a channel2–7 is defined as the optim ...
... goals of information theory is to find fundamental limits imposed on any coding scheme that attempts to accomplish this task. Following a tradition going back to Shannon’s groundbreaking work1, this problem is usually studied asymptotically: the quantum capacity of a channel2–7 is defined as the optim ...
Quantum computation with two-electron spins in
... many advantages over the superficially simpler one-spin qubit. The required one and two-qubit operations, including the initiation and measurement of the qubit’s states, have already been demonstrated experimentally by several research groups around the world with singlet-triplet qubits. The basic pi ...
... many advantages over the superficially simpler one-spin qubit. The required one and two-qubit operations, including the initiation and measurement of the qubit’s states, have already been demonstrated experimentally by several research groups around the world with singlet-triplet qubits. The basic pi ...
presentation pdf - EMERGENT QUANTUM MECHANICS
... These are the LOCAL expressions for the energy-momentum of the particle. Conservation of energy is maintained through the quantum Hamilton-Jacobi equation. Similar relations hold for the Pauli and Dirac particles. ...
... These are the LOCAL expressions for the energy-momentum of the particle. Conservation of energy is maintained through the quantum Hamilton-Jacobi equation. Similar relations hold for the Pauli and Dirac particles. ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: