Pure State Estimation and the Characterization of
... The estimation of specific properties of a quantum system subject to observation was one of the very first problems posed in Quantum Information Theory [1]. This problem has no analog in the classical case, where all measurements commute and a sufficiently subtle observer (a Maxwell demon) is able t ...
... The estimation of specific properties of a quantum system subject to observation was one of the very first problems posed in Quantum Information Theory [1]. This problem has no analog in the classical case, where all measurements commute and a sufficiently subtle observer (a Maxwell demon) is able t ...
Future Directions in Quantum Information
... quantum information processors over long distances. Quantum repeaters for quantum communication channels to distribute entanglement over long distances will soon be a reality. In addition to expanding significantly the capacity for secure communications, such a prototype quantum internet will allow ...
... quantum information processors over long distances. Quantum repeaters for quantum communication channels to distribute entanglement over long distances will soon be a reality. In addition to expanding significantly the capacity for secure communications, such a prototype quantum internet will allow ...
Supersymmetry
... Susy theory assumes also that the super partner of the electron is a boson called the selectron: m (e)=m(se). However, there is no experimental (or observational) indication about the existence of the selectron. Interpretation ! ...
... Susy theory assumes also that the super partner of the electron is a boson called the selectron: m (e)=m(se). However, there is no experimental (or observational) indication about the existence of the selectron. Interpretation ! ...
Poster PDF
... An ordinary coherent ensemble of independent two level systems has an uncertainty distribution symmetric between the population difference and phase directions. With spin squeezing, which is essentially a correlated behavior of many entangled spins, we can distort the error distribution and get smal ...
... An ordinary coherent ensemble of independent two level systems has an uncertainty distribution symmetric between the population difference and phase directions. With spin squeezing, which is essentially a correlated behavior of many entangled spins, we can distort the error distribution and get smal ...
Security of Quantum Bit String Commitment Depends on the
... reasoning also holds in an approximate sense [9], here used in the following form. Lemma 2.—Let 0 ; 1 and assume that the bitcommitment protocol is error-free if both parties are honest. Then there is a method for Alice to cheat such that the probability of successfully revealing a 0 given ...
... reasoning also holds in an approximate sense [9], here used in the following form. Lemma 2.—Let 0 ; 1 and assume that the bitcommitment protocol is error-free if both parties are honest. Then there is a method for Alice to cheat such that the probability of successfully revealing a 0 given ...
Spin transport through nanostructures B. K ,
... with a single electron spin. The discoveries of the spin blockade in sequential transport through quantum dots due to spin selection rules [4] and spin charge separation [5, 6] were important steps for achieving such a goal. The standard way to generate a spin-polarized current is to inject electron ...
... with a single electron spin. The discoveries of the spin blockade in sequential transport through quantum dots due to spin selection rules [4] and spin charge separation [5, 6] were important steps for achieving such a goal. The standard way to generate a spin-polarized current is to inject electron ...
Even-denominator fractional quantum Hall effect in bilayer graphene
... Do momentum relaxation and charge inhomogeneity originate from the same or from different microscopic processes? If the same microscopic mechanisms cause elastic scattering and charge inhomogeneity m and n* measured in different devices should show a correlation ...
... Do momentum relaxation and charge inhomogeneity originate from the same or from different microscopic processes? If the same microscopic mechanisms cause elastic scattering and charge inhomogeneity m and n* measured in different devices should show a correlation ...
Knowledge and Reality Lecture 6 Free Will
... terms of determinism. Quantum mechanics, so we are told, means that there is chance at a minute sub-atomic level. How much of a difference does this make? A) Many say that although at the subatomic level, where a particle might have an equal chance of spinning up or down, such probabilities are canc ...
... terms of determinism. Quantum mechanics, so we are told, means that there is chance at a minute sub-atomic level. How much of a difference does this make? A) Many say that although at the subatomic level, where a particle might have an equal chance of spinning up or down, such probabilities are canc ...
Quantum Networking and Internetworking
... The concept of entanglement, in which the states of two or more quantum subsystems are correlated in a fashion that is not possible in classical systems, is the most difficult quantum concept to grasp. Two qubits can be entangled in a continuous spectrum of possible states; four types of entangled s ...
... The concept of entanglement, in which the states of two or more quantum subsystems are correlated in a fashion that is not possible in classical systems, is the most difficult quantum concept to grasp. Two qubits can be entangled in a continuous spectrum of possible states; four types of entangled s ...
View PDF - The Institute of Optics
... phase ramp in one cartesian dimension is simply a wavefront tilt, and leads to a shift in the position of the beam in the far field. It turns out that one can determine analytically the form of the phase function that needs to be applied to a light field to perform this mapping. In both the original w ...
... phase ramp in one cartesian dimension is simply a wavefront tilt, and leads to a shift in the position of the beam in the far field. It turns out that one can determine analytically the form of the phase function that needs to be applied to a light field to perform this mapping. In both the original w ...
Full Counting Statistics in a Propagating Quantum Front and
... become accessible in a number of experiments on tunnel junctions [4,5], quantum dots [6,7], and quantum point contacts [8]. The FCS has also been proposed as a tool to extract the entanglement entropy [9] in terms of the measured cumulants [10–12]. Theoretically, the FCS is best understood for the t ...
... become accessible in a number of experiments on tunnel junctions [4,5], quantum dots [6,7], and quantum point contacts [8]. The FCS has also been proposed as a tool to extract the entanglement entropy [9] in terms of the measured cumulants [10–12]. Theoretically, the FCS is best understood for the t ...
r2 - SIUE
... even leaving aside the fact that the two wave functions exist in configuration space, if ...
... even leaving aside the fact that the two wave functions exist in configuration space, if ...
A Chemical Approach to Molecular Spin Qubits: Decoherence and
... quantum effects, from medical MRIs to quantum dots. Nevertheless, there is ample room for research, development and innovation in the next-generation quantum technologies such as quantum computation, quantum key distribution and quantum metrology, which all revolve around the coherent manipulation o ...
... quantum effects, from medical MRIs to quantum dots. Nevertheless, there is ample room for research, development and innovation in the next-generation quantum technologies such as quantum computation, quantum key distribution and quantum metrology, which all revolve around the coherent manipulation o ...
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: