Was Einstein Right?
... Over the past five years, though, hidden variables have come back from the dead, thanks largely to Gerard ’t Hooft of the University of Utrecht in the Netherlands, a Nobel laureate quantum mechanician known for toying with radical hypotheses. He argues that the salient difference between quantum and ...
... Over the past five years, though, hidden variables have come back from the dead, thanks largely to Gerard ’t Hooft of the University of Utrecht in the Netherlands, a Nobel laureate quantum mechanician known for toying with radical hypotheses. He argues that the salient difference between quantum and ...
Quantum Computation and Statistical Physics
... • Kitaev’s toric code model and the planar code states • Reduction from MQC with the planar code states to the Ising model on a planar graph (doubling trick) • Barahona’s Pfaffian formula for planar and non-planar graphs ...
... • Kitaev’s toric code model and the planar code states • Reduction from MQC with the planar code states to the Ising model on a planar graph (doubling trick) • Barahona’s Pfaffian formula for planar and non-planar graphs ...
Chapter 3. Foundations of Quantum Theory II
... extend the theory of open quantum systems further. In particular, we will develop two important concepts: generalized measurements, which are performed by making use of an auxiliary system, and quantum channels, which describe how open systems evolve. ...
... extend the theory of open quantum systems further. In particular, we will develop two important concepts: generalized measurements, which are performed by making use of an auxiliary system, and quantum channels, which describe how open systems evolve. ...
Quantum Computational Complexity in Curved Spacetime
... fact because spin-based qubits in a quantum computer will clearly interact with Earth’s gravitational field and their states will therefore change with time even if the computer is in the idle state. In other words, qubit-encoded quantum information will invariably suffer gravitation-induced drift d ...
... fact because spin-based qubits in a quantum computer will clearly interact with Earth’s gravitational field and their states will therefore change with time even if the computer is in the idle state. In other words, qubit-encoded quantum information will invariably suffer gravitation-induced drift d ...
Computing prime factors with a Josephson phase qubit quantum
... this algorithm involves the challenge of combining both single- and coupled-qubit gates in a meaningful sequence. We constructed the full factoring sequence by first performing automatic calibration of the individual gates and then combined them, without additional tuning, so as to factor the compos ...
... this algorithm involves the challenge of combining both single- and coupled-qubit gates in a meaningful sequence. We constructed the full factoring sequence by first performing automatic calibration of the individual gates and then combined them, without additional tuning, so as to factor the compos ...
Towards quantum template matching
... Although at the end of step 6 the amplitude of |yi in the state vector is the ‘phase-only correlation’ at y, in step 7 we are only sampling the probability distribution. Although the probability of observing y = a is larger than the probability of observing any other y value, it is still relatively ...
... Although at the end of step 6 the amplitude of |yi in the state vector is the ‘phase-only correlation’ at y, in step 7 we are only sampling the probability distribution. Although the probability of observing y = a is larger than the probability of observing any other y value, it is still relatively ...
Quantum Algorithms and the Genetic Code
... them to the best of their capability, is the legacy of Charles Darwin—survival of the fittest. This is an optimisation problem, but it is not easy to quantify it in mathematical terms. Often we can explain various observed features of living organisms [1]. The explanation becomes more and more belie ...
... them to the best of their capability, is the legacy of Charles Darwin—survival of the fittest. This is an optimisation problem, but it is not easy to quantify it in mathematical terms. Often we can explain various observed features of living organisms [1]. The explanation becomes more and more belie ...
Reversing Quantum Measurements
... only certain probabilistic outcomes. • Information about the current state can be garnered from past measurements of identically configured quantum states. • However, information from future measurements may tell a fundamentally different story. • This makes quantum state description timeasymmetric. ...
... only certain probabilistic outcomes. • Information about the current state can be garnered from past measurements of identically configured quantum states. • However, information from future measurements may tell a fundamentally different story. • This makes quantum state description timeasymmetric. ...
Quantum Phase Transitions
... end result is seen in the action, which looks like that of a d + 1 Euclidean space-time integral, except that the extra temporal dimension is finite in extent (from 0 to β). As T → 0, we get the same (infinite) limits for a d + 1 effective classical system. This equivalent mapping between a d-dimens ...
... end result is seen in the action, which looks like that of a d + 1 Euclidean space-time integral, except that the extra temporal dimension is finite in extent (from 0 to β). As T → 0, we get the same (infinite) limits for a d + 1 effective classical system. This equivalent mapping between a d-dimens ...
Quantum memory for superconducting qubits 兲
... approach would be to introduce phenomenological dissipation and decoherence rates for the qubit and resonator, and calculate the fidelity from the density matrix equation of motion. However, the resulting fidelity versus gate speed curve would then depend sensitively on the assumed dissipation and d ...
... approach would be to introduce phenomenological dissipation and decoherence rates for the qubit and resonator, and calculate the fidelity from the density matrix equation of motion. However, the resulting fidelity versus gate speed curve would then depend sensitively on the assumed dissipation and d ...
Simulation of Quantum Gates on a Novel GPU Architecture
... Figure 3: Each thread computes the 1-qubit transformation for a pair of coefficients; in this example the qubit no. 2 is transformed with 8 threads per block. Simulation of 1-qubit gate U The simulation of a 1-qubit gate U is derived from the parallel SIMD execution of Eq. 3, where a quantum transfo ...
... Figure 3: Each thread computes the 1-qubit transformation for a pair of coefficients; in this example the qubit no. 2 is transformed with 8 threads per block. Simulation of 1-qubit gate U The simulation of a 1-qubit gate U is derived from the parallel SIMD execution of Eq. 3, where a quantum transfo ...
Слайд 1 - I C R A
... Canonical approach: no strict proof of gauge invariance of the Wheeler − DeWitt theory Path integral approach contains the procedure of derivation of an equation for a wave function from the path integral, while gauge invariance of the path integral, and the theory as a whole, being ensured by asymp ...
... Canonical approach: no strict proof of gauge invariance of the Wheeler − DeWitt theory Path integral approach contains the procedure of derivation of an equation for a wave function from the path integral, while gauge invariance of the path integral, and the theory as a whole, being ensured by asymp ...
PDF - at www.arxiv.org.
... The creation of a quantum computer is an outstanding fundamental and practical problem. The quantum computer could be used for the execution of very complicated tasks which are not solvable with the classical computers. The first prototype of a solid state quantum computer was created in 2009 with s ...
... The creation of a quantum computer is an outstanding fundamental and practical problem. The quantum computer could be used for the execution of very complicated tasks which are not solvable with the classical computers. The first prototype of a solid state quantum computer was created in 2009 with s ...
Mutually exclusive and exhaustive quantum states
... in identifying a list of relevant propositions concerning that situation. The list must be mutually exclusive (no two propositions can simultaneously be true) and exhaustive (one of the propositions is certainly true). Such a set of mutually exclusive and exhaustive propositions has sometimes been c ...
... in identifying a list of relevant propositions concerning that situation. The list must be mutually exclusive (no two propositions can simultaneously be true) and exhaustive (one of the propositions is certainly true). Such a set of mutually exclusive and exhaustive propositions has sometimes been c ...
