Revisiting a Limit on Efficient Quantum Computation Tarsem S. Purewal Jr. ABSTRACT
... the jth bit of a and b can be computed in time polynomial in j. ...
... the jth bit of a and b can be computed in time polynomial in j. ...
Interpretations of Quantum Mechanics: a critical - Philsci
... in terms of the states of its constituent ’parts’. Generally, it is a very hard problem to decide whether a quantum state is entangled or not. Fortunately, there are operational criteria, relying on measurements of correlations, with a possible outcome from which one can conclude that the state is e ...
... in terms of the states of its constituent ’parts’. Generally, it is a very hard problem to decide whether a quantum state is entangled or not. Fortunately, there are operational criteria, relying on measurements of correlations, with a possible outcome from which one can conclude that the state is e ...
Realizing effective magnetic field for photons by controlling the
... Figure 4 | Dynamic coupling between photonic-crystal resonators. a, A photonic crystal made from dielectric rods (black) with a permittivity of 8.9 and radius of 0.2a (a is the lattice constant). The resonator on the left (red) is a rod with permittivity of 7.4 and radius of 0.12a, and is shifted 0. ...
... Figure 4 | Dynamic coupling between photonic-crystal resonators. a, A photonic crystal made from dielectric rods (black) with a permittivity of 8.9 and radius of 0.2a (a is the lattice constant). The resonator on the left (red) is a rod with permittivity of 7.4 and radius of 0.12a, and is shifted 0. ...
Quantum Criticality and Black Holes
... Dam Son, Washington Markus Mueller, Harvard Subir Sachdev, Harvard ...
... Dam Son, Washington Markus Mueller, Harvard Subir Sachdev, Harvard ...
QUANTUM DOTS - Electrical and Computer Engineering
... TWO ELECTRONS, EACH FREE TO TUNNEL TO ANY SITE IN THE CELL, THESE ELECTRONS WILL TRY TO OCCUPY THE FURTHEST POSSIBLE SITE WITH RESPECT TO EACH OTHER DUE TO MUTUALELECTROSTATIC REPULSION. THEREFORE, TWO DISTINGUISHABLE CELL STATES EXIST. 2) SHOWS THE TWO POSSIBLE MINIMUM ENERGY STATES OF A QUANTUM-DO ...
... TWO ELECTRONS, EACH FREE TO TUNNEL TO ANY SITE IN THE CELL, THESE ELECTRONS WILL TRY TO OCCUPY THE FURTHEST POSSIBLE SITE WITH RESPECT TO EACH OTHER DUE TO MUTUALELECTROSTATIC REPULSION. THEREFORE, TWO DISTINGUISHABLE CELL STATES EXIST. 2) SHOWS THE TWO POSSIBLE MINIMUM ENERGY STATES OF A QUANTUM-DO ...
The Wigner function and quantum state tomography
... Quantum mechanics is the most complete theory of Nature currently known, but it often conflicts with our classical intuition. A notable deviation between quantum and classical theories is the manner in which the states of systems are specified. Quantum systems are described as vectors (wavefunctions ...
... Quantum mechanics is the most complete theory of Nature currently known, but it often conflicts with our classical intuition. A notable deviation between quantum and classical theories is the manner in which the states of systems are specified. Quantum systems are described as vectors (wavefunctions ...
Classical Physics versus Quantum Physics: An Overview
... their world view was subverted, uprooted, and toppled by a physical theory called quantum mechanics. Classical Physics can explain a wide range of macroscopic phenomena, such as the motion of billiard balls andspace rockets, but they fail spectacularly when applied to microscopic phenomena, such as ...
... their world view was subverted, uprooted, and toppled by a physical theory called quantum mechanics. Classical Physics can explain a wide range of macroscopic phenomena, such as the motion of billiard balls andspace rockets, but they fail spectacularly when applied to microscopic phenomena, such as ...
... characterize the degree of entanglement in a quantum system. It is important to mention that the usual physical interpretation given to entangled states has been questioned by some authors. For instance, in Ref. [16] it is stated that: “Some authors would like to draw far-reaching philosophical conc ...
Quantum Computing
... In the case of Qbits, the logic gates that are applied are unitary matrices. These matrices are basically rotations that act on a Qbit, and as such they can all be undone easily by applying the opposite rotation. The benefits of this will be expanded on later, when I discuss the computational proces ...
... In the case of Qbits, the logic gates that are applied are unitary matrices. These matrices are basically rotations that act on a Qbit, and as such they can all be undone easily by applying the opposite rotation. The benefits of this will be expanded on later, when I discuss the computational proces ...
Can many-valued logic help to comprehend quantum phenomena?
... Jan Lukasiewicz, the founding father of modern many-valued logic argued in his address which he delivered as a Rector of Warsaw University at the Inaguration of the academic year 1922/1923 [9] that ‘All sentences about future facts that are not yet decided belong to this [many-valued] category. Such ...
... Jan Lukasiewicz, the founding father of modern many-valued logic argued in his address which he delivered as a Rector of Warsaw University at the Inaguration of the academic year 1922/1923 [9] that ‘All sentences about future facts that are not yet decided belong to this [many-valued] category. Such ...
Quantum networking with single ions and single photons interfaced in free space
... The quantum system of choice: single trapped ions Of all the physical systems listed above, single trapped atomic ions have come closest to complying with the DiVincenzo criteria, proving to be among the most promising candidates for future large-scale quantum-information processors [31, 32]. Atomic ...
... The quantum system of choice: single trapped ions Of all the physical systems listed above, single trapped atomic ions have come closest to complying with the DiVincenzo criteria, proving to be among the most promising candidates for future large-scale quantum-information processors [31, 32]. Atomic ...
entangled photon pairs: efficient generation and detection, and bit
... quantum communication and to study fundamental quantum mechanics. This thesis consists of two experiments: bit commitment and the generation and detection of polarization entangled photon pairs with a high heralding efficiency. Bit commitment is a two-party protocol that can be used as a cryptograph ...
... quantum communication and to study fundamental quantum mechanics. This thesis consists of two experiments: bit commitment and the generation and detection of polarization entangled photon pairs with a high heralding efficiency. Bit commitment is a two-party protocol that can be used as a cryptograph ...
How the Quantum Universe Became Classical
... then the logical rules of ordinary language are not necessarily respected. So quantum theory has the possibility of violating the familiar logical structure of ordinary language. Hence, another way of expressing the essential difference between classical and quantum mechanics is to say that they inv ...
... then the logical rules of ordinary language are not necessarily respected. So quantum theory has the possibility of violating the familiar logical structure of ordinary language. Hence, another way of expressing the essential difference between classical and quantum mechanics is to say that they inv ...
Measuring the quantum mechanical wave function
... This ability to extract 2-D, or joint, probabilities pertaining to a pair of random variables from measurements only of individual random variables is quite nice and can be applied to data similarly measured for a stream of quantum particles. These could be atoms emitted from a `hot-oven’ source. Yo ...
... This ability to extract 2-D, or joint, probabilities pertaining to a pair of random variables from measurements only of individual random variables is quite nice and can be applied to data similarly measured for a stream of quantum particles. These could be atoms emitted from a `hot-oven’ source. Yo ...
The Einstein-Podolsky-Rosen Argument and the Bell Inequalities
... As Bell proved in 1964, under some further but quite plausible assumptions, this conclusion that there are hidden variables implies that, in some spin-correlation experiments, the measured quantum mechanical probabilities should satisfy particular inequalities (Bell-type inequalities). The paradox c ...
... As Bell proved in 1964, under some further but quite plausible assumptions, this conclusion that there are hidden variables implies that, in some spin-correlation experiments, the measured quantum mechanical probabilities should satisfy particular inequalities (Bell-type inequalities). The paradox c ...
Calculation Algorithm for Finding the Mini
... B-2: For each slot, binary detection is done by using information of the bases. ...
... B-2: For each slot, binary detection is done by using information of the bases. ...
Quantum circuits for strongly correlated quantum systems
... Recent advances in quantum information have led to novel ways of looking at strongly correlated quantum manybody systems. On the one hand, a great deal of theoretical work has been done identifying the basic structure of entanglement in low-energy states of many-body Hamiltonians. This has led, for ...
... Recent advances in quantum information have led to novel ways of looking at strongly correlated quantum manybody systems. On the one hand, a great deal of theoretical work has been done identifying the basic structure of entanglement in low-energy states of many-body Hamiltonians. This has led, for ...