Experimental Implementation of Encoded Logical Qubit Operations
... DOI: 10.1103/PhysRevLett.109.100503 ...
... DOI: 10.1103/PhysRevLett.109.100503 ...
Book Reviews
... can simultaneously ascertain both the position and momentum of both systems, by performing one measurement on each system (pp. 11, 64), despite EPR’ s assertion that ª one would not arrive at our conclusion [that quantum-mechanical description is incomplete] if one insisted that two or more physical ...
... can simultaneously ascertain both the position and momentum of both systems, by performing one measurement on each system (pp. 11, 64), despite EPR’ s assertion that ª one would not arrive at our conclusion [that quantum-mechanical description is incomplete] if one insisted that two or more physical ...
Hong-Ou-Mandel interference mediated by the magnetic plasmon waves in a three-dimensional
... 1155nm pointed by the green arrows in both experimental and stimulated result. This mode correspond to the second MPW with the phase difference equal to 2π, which can also be regarded as the second excited spin wave-like mode. Its magnetic field distribution is shown in Fig. 2(c). The observation of ...
... 1155nm pointed by the green arrows in both experimental and stimulated result. This mode correspond to the second MPW with the phase difference equal to 2π, which can also be regarded as the second excited spin wave-like mode. Its magnetic field distribution is shown in Fig. 2(c). The observation of ...
A quantum mechanical model of adaptive mutation
... The role of the interaction between a quantum system and its environment, and the transition from quantum to classical reality, has been a subject of increasing interest in physics over the last few years. The emergence of classical behaviour from quantum dynamics can be traced back to the measureme ...
... The role of the interaction between a quantum system and its environment, and the transition from quantum to classical reality, has been a subject of increasing interest in physics over the last few years. The emergence of classical behaviour from quantum dynamics can be traced back to the measureme ...
can life explain quantum mechanics?
... would allow matter to branch into two pathways—the living and lifeless—-but under a single set of microscopic, dynamical lawsl Events and records of events. It is clear that under infinitely precise initial conditions and strictly deterministic and complete laws of motion the concept of more or less ...
... would allow matter to branch into two pathways—the living and lifeless—-but under a single set of microscopic, dynamical lawsl Events and records of events. It is clear that under infinitely precise initial conditions and strictly deterministic and complete laws of motion the concept of more or less ...
A quantum framework for likelihood ratios
... information-theoretic approach in developing a new statistical formula for the calculation of likelihood ratios based on the principles of quantum entanglement. In doing so, it is argued that this quantum approach demonstrates: that the likelihood ratio is a real quality of statistical systems; that ...
... information-theoretic approach in developing a new statistical formula for the calculation of likelihood ratios based on the principles of quantum entanglement. In doing so, it is argued that this quantum approach demonstrates: that the likelihood ratio is a real quality of statistical systems; that ...
Quantum Spin Doctors Dissect Exotic States of Matter
... in the same state whenever possible. This condition is known as Bose–Einstein condensation because it was first predicted by Albert Einstein after he reviewed the work of Bose. An atom or other composite particle (that is, a particle constructed from more elementary particles such as electrons) can ...
... in the same state whenever possible. This condition is known as Bose–Einstein condensation because it was first predicted by Albert Einstein after he reviewed the work of Bose. An atom or other composite particle (that is, a particle constructed from more elementary particles such as electrons) can ...
Characterizing the Performance Effect of Trials and Rotations in
... algorithms. Intuitively, QPE allows quantum algorithms to find the hidden structure in certain kinds of problems. In particular, Shor’s well-known algorithm for factoring the product of two primes uses QPE. Simulation algorithms, such as Ground State Estimation (GSE) for quantum chemistry, also use ...
... algorithms. Intuitively, QPE allows quantum algorithms to find the hidden structure in certain kinds of problems. In particular, Shor’s well-known algorithm for factoring the product of two primes uses QPE. Simulation algorithms, such as Ground State Estimation (GSE) for quantum chemistry, also use ...
Thermodynamics of trajectories of a quantum harmonic
... Ti as ni = 1/(eω/kB Ti − 1) [1]. In the high-temperature limit, ni ∼ Ti and we obtain a perfect match between the classical large-deviation function [15,16] and its quantum counterpart Eq. (9). Turning to the opposite limit, where Ti → 0, we find that a prominent difference appears: There is a sign ...
... Ti as ni = 1/(eω/kB Ti − 1) [1]. In the high-temperature limit, ni ∼ Ti and we obtain a perfect match between the classical large-deviation function [15,16] and its quantum counterpart Eq. (9). Turning to the opposite limit, where Ti → 0, we find that a prominent difference appears: There is a sign ...
Quantum Wires and Quantum Point Contacts
... Structure of spinless edge states in the IQHE regime. (a)-(c) One-electron picture of edge states. (a) Top view on the 2DEG plane near the edge. (b) Adiabatic bending of Landau levels along the increasing potential energy near the edge. (c) Electron density as a function of the distance to the boun ...
... Structure of spinless edge states in the IQHE regime. (a)-(c) One-electron picture of edge states. (a) Top view on the 2DEG plane near the edge. (b) Adiabatic bending of Landau levels along the increasing potential energy near the edge. (c) Electron density as a function of the distance to the boun ...
Chapter 11 Quantum statistics
... be completely known in some special cases (pure state), we still cannot predict the result of a measurement since any measurement perturbs the system. This lack of knowledge manifests itself in the statistical interpretation of the wave function and in the uncertainty relation between qi and pi , wh ...
... be completely known in some special cases (pure state), we still cannot predict the result of a measurement since any measurement perturbs the system. This lack of knowledge manifests itself in the statistical interpretation of the wave function and in the uncertainty relation between qi and pi , wh ...
ij - Scientific Research Publishing
... for the phenomena with quantum irreversibility are discussed. In spite of previous opinion we conclude that in the equilibrium environment is not necessary to postulate the processes with collapses of wave functions. Besides, we draw attention to the fact that the Heisenberg’s uncertainty relation d ...
... for the phenomena with quantum irreversibility are discussed. In spite of previous opinion we conclude that in the equilibrium environment is not necessary to postulate the processes with collapses of wave functions. Besides, we draw attention to the fact that the Heisenberg’s uncertainty relation d ...
N -level quantum thermodynamics
... system A. Since the dynamics of system B is completely ignored, it is impossible to prove that energy is conserved. To avoid this problem, it is assumed that whatever energy is lost or gained by A is gained or lost by B but in such a way that these changes in B do not affect the time evolution of A. ...
... system A. Since the dynamics of system B is completely ignored, it is impossible to prove that energy is conserved. To avoid this problem, it is assumed that whatever energy is lost or gained by A is gained or lost by B but in such a way that these changes in B do not affect the time evolution of A. ...
What Is Quantum Information? - Quantum Theory Group at CMU
... ◦ Use only “X” bit: will transmit X info ◦ Use only “Z” bit: will transmit Z info ◦ Quantization of circuit left as exercise • Each species of information is in a correlation between the “classical” bit and the b qubit ◦ Measuring classical bit tells one nothing ◦ Measuring the b qubit tells one not ...
... ◦ Use only “X” bit: will transmit X info ◦ Use only “Z” bit: will transmit Z info ◦ Quantization of circuit left as exercise • Each species of information is in a correlation between the “classical” bit and the b qubit ◦ Measuring classical bit tells one nothing ◦ Measuring the b qubit tells one not ...
Quantum-teleportation benchmarks for independent and identically
... The second remark concerns the supremum over the small ball ρθ − ρθ 1 n−1/2+ in definition (3). Why not consider the supremum over all θ as we did in the nonasymptotic case ? The reason is that the global supremum would be overly pessimistic and would be dominated by the region in the parameter ...
... The second remark concerns the supremum over the small ball ρθ − ρθ 1 n−1/2+ in definition (3). Why not consider the supremum over all θ as we did in the nonasymptotic case ? The reason is that the global supremum would be overly pessimistic and would be dominated by the region in the parameter ...
Quantum computing
Quantum computing studies theoretical computation systems (quantum computers) that make direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits (qubits), which can be in superpositions of states. A quantum Turing machine is a theoretical model of such a computer, and is also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic and probabilistic computers. The field of quantum computing was initiated by the work of Yuri Manin in 1980, Richard Feynman in 1982, and David Deutsch in 1985. A quantum computer with spins as quantum bits was also formulated for use as a quantum space–time in 1968.As of 2015, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits. Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in an effort to develop quantum computers for civilian, business, trade, and national security purposes, such as cryptanalysis.Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. There exist quantum algorithms, such as Simon's algorithm, that run faster than any possible probabilistic classical algorithm.Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm, as quantum computation does not violate the Church–Turing thesis.