Josephson Effect for Photons in Two Weakly Linked Microcavities
... of a strongly interacting many-body optical system where the polaritons condense into a superfluid quantum phase. The wave function of this phase is a superposition of the coherent states of photons and two-level atoms [6]. When the freedom of the atom polarization is integrated out, the superfluid ...
... of a strongly interacting many-body optical system where the polaritons condense into a superfluid quantum phase. The wave function of this phase is a superposition of the coherent states of photons and two-level atoms [6]. When the freedom of the atom polarization is integrated out, the superfluid ...
Quantum walk based search algorithms
... reflections ref(A) and ref(B) are natural choices for that. They are also generalizations of the Grover diffusion operator [16]. Indeed, when the transition to each neighbor is equally likely, they correspond exactly to Grover diffusion. In Szegedy’s original definition the alternating reflections w ...
... reflections ref(A) and ref(B) are natural choices for that. They are also generalizations of the Grover diffusion operator [16]. Indeed, when the transition to each neighbor is equally likely, they correspond exactly to Grover diffusion. In Szegedy’s original definition the alternating reflections w ...
An efficient test for product states
... using the Schmidt decomposition. Given a bipartite mixed state ρ as a d2 -dimensional matrix, it’s NP-hard to determine whether ρ is separable (up to accuracy 1/poly(d)). This was shown by [Gurvits ’03] for accuracy 1/exp(d) via a reduction from the NP-hard Clique problem. Later improved to 1/poly(d ...
... using the Schmidt decomposition. Given a bipartite mixed state ρ as a d2 -dimensional matrix, it’s NP-hard to determine whether ρ is separable (up to accuracy 1/poly(d)). This was shown by [Gurvits ’03] for accuracy 1/exp(d) via a reduction from the NP-hard Clique problem. Later improved to 1/poly(d ...
Spin or, Actually: Spin and Quantum Statistics
... at the core of our understanding of covalent bonding. If electrons were spinless fermions not even the simplest atoms and molecules would be the way they are in Nature: Only ortho-helium would exist, and the hydrogen molecule would not exist. If electrons we not fermions, but bosons, there would exi ...
... at the core of our understanding of covalent bonding. If electrons were spinless fermions not even the simplest atoms and molecules would be the way they are in Nature: Only ortho-helium would exist, and the hydrogen molecule would not exist. If electrons we not fermions, but bosons, there would exi ...
Temperature Dependence of the Energy Gap of InP Quantum Dots
... This paper presents a sophomore-level experiment that allows students to see the “particle-in-abox” behavior of a real system (quantum dots of different sizes) and explores the temperature dependence of the quantum dots’ energy gap. Quantum dots are nanometer-sized clusters of atoms that contain any ...
... This paper presents a sophomore-level experiment that allows students to see the “particle-in-abox” behavior of a real system (quantum dots of different sizes) and explores the temperature dependence of the quantum dots’ energy gap. Quantum dots are nanometer-sized clusters of atoms that contain any ...
Quantum mechanics near closed timelike lines
... with each other. The first and second kets in the representation refer to the younger and older versions of the bit, respectively, with respect to the proper time of the =" means that if carrier. The "evolves into" symbol the bits enter the gate in the state to the left of the symbol, they leave it ...
... with each other. The first and second kets in the representation refer to the younger and older versions of the bit, respectively, with respect to the proper time of the =" means that if carrier. The "evolves into" symbol the bits enter the gate in the state to the left of the symbol, they leave it ...
doc - The Crowned Anarchist Literature and Science Fiction
... interpret the dual spectrum of the helium atom (that is, the superposed spectra of its two forms, in which the spins of the two electrons are either parallel or antiparallel), and with it he predicted that the hydrogen molecule should have analogous dual forms. With others, he also addressed many at ...
... interpret the dual spectrum of the helium atom (that is, the superposed spectra of its two forms, in which the spins of the two electrons are either parallel or antiparallel), and with it he predicted that the hydrogen molecule should have analogous dual forms. With others, he also addressed many at ...
DFT - ermes@unt
... Exchange term is a two-body interaction term: it takes care of the many-body interactions at the level of two single electrons. In this respect it includes also correlation effects at the two-body level: it neglects all correlations but the one required by the Pauli exclusion principle Since the int ...
... Exchange term is a two-body interaction term: it takes care of the many-body interactions at the level of two single electrons. In this respect it includes also correlation effects at the two-body level: it neglects all correlations but the one required by the Pauli exclusion principle Since the int ...
Ashtekar.pdf
... an amazing accuracy, surpassing even the legendary tests of quantum electrodynamics. Therefore, it is natural to ask: Does quantum general relativity, coupled to suitable matter –or, supergravity, its supersymmetric generalization– exist as consistent theories non-perturbatively ? This is a fascinat ...
... an amazing accuracy, surpassing even the legendary tests of quantum electrodynamics. Therefore, it is natural to ask: Does quantum general relativity, coupled to suitable matter –or, supergravity, its supersymmetric generalization– exist as consistent theories non-perturbatively ? This is a fascinat ...
py354-final-121502
... calculations and answers. Please circle answers wherever you can. If you need more space, write on the back of these exam pages, and make a note so the grader can follow. This is a long exam, and in all likelihood, you will not finish, so don't be upset by leaving things incomplete. Please note the ...
... calculations and answers. Please circle answers wherever you can. If you need more space, write on the back of these exam pages, and make a note so the grader can follow. This is a long exam, and in all likelihood, you will not finish, so don't be upset by leaving things incomplete. Please note the ...
research statement in pdf
... • Entanglement and Thermalization in physical states There are many things to do. First and foremost, we need to implement energy constraints in the ensemble of physical states so to prove that the reduced system is typically a thermal state. This result would somehow complete the program of giving ...
... • Entanglement and Thermalization in physical states There are many things to do. First and foremost, we need to implement energy constraints in the ensemble of physical states so to prove that the reduced system is typically a thermal state. This result would somehow complete the program of giving ...
Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.