Sufficient Conditions for Efficient Classical Simulation of Quantum
... where the quantum process is a LON. We emphasize that efficient classical simulation might still be possible using other methods even if our conditions are not satisfied. Our second contribution, developed in Sec. III, is to apply the results of the first one to investigate the effects of imperfecti ...
... where the quantum process is a LON. We emphasize that efficient classical simulation might still be possible using other methods even if our conditions are not satisfied. Our second contribution, developed in Sec. III, is to apply the results of the first one to investigate the effects of imperfecti ...
Time-Space Efficient Simulations of Quantum Computations
... known time-space lower bounds for classical algorithms (see [37] for a survey) hold for models with random access to the input and memory. This makes the lower bounds more meaningful as they do not exploit artifacts due to sequential access. Extending the standard quantum Turing machine model [8] t ...
... known time-space lower bounds for classical algorithms (see [37] for a survey) hold for models with random access to the input and memory. This makes the lower bounds more meaningful as they do not exploit artifacts due to sequential access. Extending the standard quantum Turing machine model [8] t ...
Quantum nanophotonic phase switch with a single atom.
... internal states, one of which does not couple to the cavity mode (for example another hyperfine atomic sublevel), the phase of the atomic superposition is switched by p on reflection of a single photon. By also adding an auxiliary photon mode that does not enter the cavity (for example an orthogonal ...
... internal states, one of which does not couple to the cavity mode (for example another hyperfine atomic sublevel), the phase of the atomic superposition is switched by p on reflection of a single photon. By also adding an auxiliary photon mode that does not enter the cavity (for example an orthogonal ...
Abstract Experiments demonstrating entanglement swapping have
... Encyclopedia article on the topic, Berkovitz defines action at a distance as: a phenomenon in which a change in intrinsic properties of one system induces a change in the intrinsic properties of a distant system without there being a process that carries this influence contiguously in space and tim ...
... Encyclopedia article on the topic, Berkovitz defines action at a distance as: a phenomenon in which a change in intrinsic properties of one system induces a change in the intrinsic properties of a distant system without there being a process that carries this influence contiguously in space and tim ...
Entangling Dipole-Dipole Interactions and Quantum Logic in Optical
... create entangled states of atoms. When the light field forming the optical lattice is both intense and detuned far from atomic resonance, ∆ = ω L − ω0 >> Γ , where Γ is the single atom resonance linewidth, then the mean dipole moment will be very small, making the scattering rate negligible, while ...
... create entangled states of atoms. When the light field forming the optical lattice is both intense and detuned far from atomic resonance, ∆ = ω L − ω0 >> Γ , where Γ is the single atom resonance linewidth, then the mean dipole moment will be very small, making the scattering rate negligible, while ...
Decoherence and open quantum systems
... In quantum information theory entanglement is used as a source for many different applications, for instance in quantum cryptography, teleportation schemes or quantum computation. To keep this entanglement in the system as long as possible we have to protect it against different environmental influe ...
... In quantum information theory entanglement is used as a source for many different applications, for instance in quantum cryptography, teleportation schemes or quantum computation. To keep this entanglement in the system as long as possible we have to protect it against different environmental influe ...
BQP and the Polynomial Hierarchy
... Here BQLOGTIME is the class of problems solvable by logarithmic-size quantum circuits, with random access to the input string x1 . . . xn . It should not be confused with the much larger class BQNC, of problems solvable by logarithmic-depth quantum circuits. The relation problem that we use to separ ...
... Here BQLOGTIME is the class of problems solvable by logarithmic-size quantum circuits, with random access to the input string x1 . . . xn . It should not be confused with the much larger class BQNC, of problems solvable by logarithmic-depth quantum circuits. The relation problem that we use to separ ...
Quantum imaging technologies
... The act of opening the box constitutes a measurement, which collapses the wave function of the cat into one of the two states, dead or alive. Here we are using language associated with the Copenhagen interpretation of quantum mechanics, which describes reality in terms of probabilities associated wi ...
... The act of opening the box constitutes a measurement, which collapses the wave function of the cat into one of the two states, dead or alive. Here we are using language associated with the Copenhagen interpretation of quantum mechanics, which describes reality in terms of probabilities associated wi ...
