Quantum dots
... nuclei, while in QDs – by background charges. The number of electrons in atoms can be tuned by ionization, while in QGs – by changing the confinement potential. This is similar by a replacement of nucleus by its neighbor in the periodic table. ...
... nuclei, while in QDs – by background charges. The number of electrons in atoms can be tuned by ionization, while in QGs – by changing the confinement potential. This is similar by a replacement of nucleus by its neighbor in the periodic table. ...
What quantum computers may tell us about quantum mechanics
... mechanics. Schrödinger (1935) himself said, “I would not call [entanglement] one but rather the characteristic trait in quantum mechanics, the one that enforces an entire departure from all our classical lines of thought.” Yet entanglement seems to be one of the most misunderstood concepts in quant ...
... mechanics. Schrödinger (1935) himself said, “I would not call [entanglement] one but rather the characteristic trait in quantum mechanics, the one that enforces an entire departure from all our classical lines of thought.” Yet entanglement seems to be one of the most misunderstood concepts in quant ...
Quantum Physical Symbol Systems
... approximation due to imperfect knowledge of the details of systems whose underlying dynamics are deterministic. According to quantum theory, uncertainty is a fundamental: there are aspects of the physical world that are intrinsically unpredictable. Moreover, the very act of acquiring knowledge about ...
... approximation due to imperfect knowledge of the details of systems whose underlying dynamics are deterministic. According to quantum theory, uncertainty is a fundamental: there are aspects of the physical world that are intrinsically unpredictable. Moreover, the very act of acquiring knowledge about ...
Halperin Presentation - National Academy of Sciences
... "Discoveries of superfluid phases in 3He, high Tc superconductors, graphene and topological insulators have brought into focus materials where quasiparticles are described by the same Dirac equation that governs behavior of relativistic particles. This class of materials, called Dirac materials, exh ...
... "Discoveries of superfluid phases in 3He, high Tc superconductors, graphene and topological insulators have brought into focus materials where quasiparticles are described by the same Dirac equation that governs behavior of relativistic particles. This class of materials, called Dirac materials, exh ...
Numerical calculation of particle collection efficiency in an
... which get charged. Particle deviation is due to effect of the electrical field on the charged particles. When a charged particle reaches the collecting plate, the charge on the particle is assumed to be passed on to the collecting plate. From the equation of motion of the particle the drag force is ...
... which get charged. Particle deviation is due to effect of the electrical field on the charged particles. When a charged particle reaches the collecting plate, the charge on the particle is assumed to be passed on to the collecting plate. From the equation of motion of the particle the drag force is ...
Realization of quantum error correction
... through concerted variation of the potentials on segmented control electrodes of the trap, and individual ion detections can be performed separately11,19. Ion preparation before each implementation of the QECC protocol consists of Doppler cooling, Raman sideband cooling of all three axial modes of v ...
... through concerted variation of the potentials on segmented control electrodes of the trap, and individual ion detections can be performed separately11,19. Ion preparation before each implementation of the QECC protocol consists of Doppler cooling, Raman sideband cooling of all three axial modes of v ...
Electronic Structure of Strained GaSb/GaAs Quantum Dot
... quantum dots. There are three empirical models, the k.p approximation [9], the pseudopotential model [10] and the tight-binding model [11], [12]. The k.p approximation treats a quantum dot as a confined bulk and continuum system, while the pseudopotential and tight-binding models treat the system wi ...
... quantum dots. There are three empirical models, the k.p approximation [9], the pseudopotential model [10] and the tight-binding model [11], [12]. The k.p approximation treats a quantum dot as a confined bulk and continuum system, while the pseudopotential and tight-binding models treat the system wi ...
Square-root measurement for quantum
... the optimal POVM directly from the necessary and sufficient conditions of Bayes strategy in general. Fortunately, we can take an alternative approach, that is, we will employ a special measurement called the square-root measurement (SRM). For a given signal set f^i : i = 1; 2; . . . ; M g, the SRM ...
... the optimal POVM directly from the necessary and sufficient conditions of Bayes strategy in general. Fortunately, we can take an alternative approach, that is, we will employ a special measurement called the square-root measurement (SRM). For a given signal set f^i : i = 1; 2; . . . ; M g, the SRM ...
Quantum_Computing
... As we begin the 21st century, many researches begin to look for ways to replace or augment traditional silicon-chip-based computing. Not only do some alternatives offer the promise of continued speed increases after the physical limits of silicon and light-based processes have been reached, but seve ...
... As we begin the 21st century, many researches begin to look for ways to replace or augment traditional silicon-chip-based computing. Not only do some alternatives offer the promise of continued speed increases after the physical limits of silicon and light-based processes have been reached, but seve ...
Quantum Chaos
... the energy levels and eigenstates of the (bound) system? For an open system, in the decay rates, in the Smatrix, in the transport properties? (lectures 1 and 2) What kind of semiclassical approximations can be used? (lecture 2) What is the longtime behaviour of a quantum system? (lecture 3) For a ...
... the energy levels and eigenstates of the (bound) system? For an open system, in the decay rates, in the Smatrix, in the transport properties? (lectures 1 and 2) What kind of semiclassical approximations can be used? (lecture 2) What is the longtime behaviour of a quantum system? (lecture 3) For a ...
Photon Correlation Spectroscopy in Particle Sizing
... a single particle small compared to the wavelength of light. Scattering from larger particles was added later and is known as Mie scattering, which gives the complete solution for spherical particles of any size. As early as 1908 the temporal fluctuations about the average scattered light intensity ...
... a single particle small compared to the wavelength of light. Scattering from larger particles was added later and is known as Mie scattering, which gives the complete solution for spherical particles of any size. As early as 1908 the temporal fluctuations about the average scattered light intensity ...
Validity of Semiclassical Gravity in the Stochastic Gravity Approach
... state of the matter stress tensor operator. The semiclassical theory is in some sense unique as a theory where the gravitational field is classical. In fact, a classical gravitational field interacts with other fields through their stress tensors, and the only reasonable c-number stress tensor that ...
... state of the matter stress tensor operator. The semiclassical theory is in some sense unique as a theory where the gravitational field is classical. In fact, a classical gravitational field interacts with other fields through their stress tensors, and the only reasonable c-number stress tensor that ...
Slides
... We trust quantum over classical coin tossing because one can never rule out an insider attack on classical coin tossing, whereas an insider attack on a quantum coin toss based on a pure state is inconsistent with the beliefs that led to the pure-state assignment. ...
... We trust quantum over classical coin tossing because one can never rule out an insider attack on classical coin tossing, whereas an insider attack on a quantum coin toss based on a pure state is inconsistent with the beliefs that led to the pure-state assignment. ...
The Physical World as a Virtual Reality
... and Schrödinger’s wave equation in 1925. Despite initial skepticism, these theories met every logical and experimental test their critics could devise and amazed even their advocates, as Fermi predicted the neutrino in 1933 before it was found in 1953 and Dirac predicted anti-matter before it too wa ...
... and Schrödinger’s wave equation in 1925. Despite initial skepticism, these theories met every logical and experimental test their critics could devise and amazed even their advocates, as Fermi predicted the neutrino in 1933 before it was found in 1953 and Dirac predicted anti-matter before it too wa ...
Intensity and State Estimation in Quantum Cryptography
... Both Alice and Eve have to measure the unknown states to the information that Bob has sent. This is achieved by quantum state tomography by which identical unknown quantum states is characterized. Initially, all the photons pairs are filtered using the spatial filters and frequency filters. After th ...
... Both Alice and Eve have to measure the unknown states to the information that Bob has sent. This is achieved by quantum state tomography by which identical unknown quantum states is characterized. Initially, all the photons pairs are filtered using the spatial filters and frequency filters. After th ...
Bohr–Einstein debates
The Bohr–Einstein debates were a series of public disputes about quantum mechanics between Albert Einstein and Niels Bohr. Their debates are remembered because of their importance to the philosophy of science. An account of the debates was written by Bohr in an article titled ""Discussions with Einsteinon Epistemological Problems in Atomic Physics"". Despite their differences of opinion regarding quantum mechanics, Bohr and Einstein had a mutual admiration that was to last the rest of their lives.The debates represent one of the highest points of scientific research in the first half of the twentieth century because it called attention to an element of quantum theory, quantum non-locality, which is absolutely central to our modern understanding of the physical world. The consensus view of professional physicists has been that Bohr proved victorious, and definitively established the fundamental probabilistic character of quantum measurement.