Optical Properties of Semiconductor Quantum Dots
... dots and distilled in papers what we had learned. Things did not always work fine, far from that, but I am glad to see that we built something, that we, indeed, added a grain of sand to the mountain of human knowledge. There are many people that I must thank for this five-year adventure and I will s ...
... dots and distilled in papers what we had learned. Things did not always work fine, far from that, but I am glad to see that we built something, that we, indeed, added a grain of sand to the mountain of human knowledge. There are many people that I must thank for this five-year adventure and I will s ...
Circuit QED: Superconducting Qubits Coupled to
... parallel fabrication of complex structures is relatively straightforward lending hope that (someday) it will be possible to scale up to processors with large numbers of qubits. We will study different qubit designs and their relative merits. We will also learn ...
... parallel fabrication of complex structures is relatively straightforward lending hope that (someday) it will be possible to scale up to processors with large numbers of qubits. We will study different qubit designs and their relative merits. We will also learn ...
Classical vs Quantum Information - UMD Math
... For four input bits of Alice, two pairs of NS-boxes on the level k = 1 allow Bob to make the guess of a value of any one of Alice’s bits as soon as he knows either a1 ⊕ AL or a3 ⊕ AR , which are the one-bit messages of the 1-box protocol. These can be encoded using the third box, on the level k = 2, ...
... For four input bits of Alice, two pairs of NS-boxes on the level k = 1 allow Bob to make the guess of a value of any one of Alice’s bits as soon as he knows either a1 ⊕ AL or a3 ⊕ AR , which are the one-bit messages of the 1-box protocol. These can be encoded using the third box, on the level k = 2, ...
Minimal normal measurement models of quantum instruments
... present our main results by solving the minimal normal measurement models of quantum devices. We wish to emphasize that most of the work presented here has already been carried out in Refs. [5, 6, 7]. Unfortunately, these papers contain some errors related to the aforementioned unitary extension pro ...
... present our main results by solving the minimal normal measurement models of quantum devices. We wish to emphasize that most of the work presented here has already been carried out in Refs. [5, 6, 7]. Unfortunately, these papers contain some errors related to the aforementioned unitary extension pro ...
Understanding the effects of leakage in superconducting quantum-error-detection circuits hosh, wler, Martinis,
... there exists a finite probability that the population tunnels out of the computational subspace, a phenomenon often referred to as leakage [1–3]. Understanding the effects of leakage is important for superconducting qubits not only because higher-energy states |2,|3, . . . are present [4,5], as is ...
... there exists a finite probability that the population tunnels out of the computational subspace, a phenomenon often referred to as leakage [1–3]. Understanding the effects of leakage is important for superconducting qubits not only because higher-energy states |2,|3, . . . are present [4,5], as is ...
Quantum dynamics in strong fluctuating fields - Physik Uni
... may pump energy into the quantum system. This in turn gives rise to various interesting nonlinear nonequilibrium phenomena such as a noise-induced enhancement of thermally assisted quantum tunnelling [67], an inversion of population in discrete quantum dissipative systems [68], a noise-induced absol ...
... may pump energy into the quantum system. This in turn gives rise to various interesting nonlinear nonequilibrium phenomena such as a noise-induced enhancement of thermally assisted quantum tunnelling [67], an inversion of population in discrete quantum dissipative systems [68], a noise-induced absol ...
Contextualizing Concepts using a Mathematical
... strictly inherited from its constituents. One could try to solve the problem ad hoc by starting all over again with a new state space each time there appears a state that was not possible given the previous state space; for instance, every time a conjunction like pet bird comes into existence. Howev ...
... strictly inherited from its constituents. One could try to solve the problem ad hoc by starting all over again with a new state space each time there appears a state that was not possible given the previous state space; for instance, every time a conjunction like pet bird comes into existence. Howev ...
Information theoretic treatment of tripartite systems and quantum
... In what follows we use the lower case letters u, v, and w to denote orthonormal bases, and where useful add a subscript, e.g., wa , to indicate the corresponding system or Hilbert space. A second basis v = {|vj i} is mutually unbiased (MU) relative to w—the terms complementary or conjugate are also ...
... In what follows we use the lower case letters u, v, and w to denote orthonormal bases, and where useful add a subscript, e.g., wa , to indicate the corresponding system or Hilbert space. A second basis v = {|vj i} is mutually unbiased (MU) relative to w—the terms complementary or conjugate are also ...
Lecture Notes for Physics 229: Quantum Information and Computation
... Furthermore, in quantum theory, noncommuting observables cannot simultaneously have precisely de ned values (the uncertainty principle), and in fact performing a measurement of one observable A will necessarily inuence the outcome of a subsequent measurement of an observable B , if A and B do not c ...
... Furthermore, in quantum theory, noncommuting observables cannot simultaneously have precisely de ned values (the uncertainty principle), and in fact performing a measurement of one observable A will necessarily inuence the outcome of a subsequent measurement of an observable B , if A and B do not c ...
Document
... NB2: CB violates both lepton number and helicity and CB contains a calculable lepton neutrino condensate. NB3: A similar story holds for supernova neutrinos (they are believed to be ...
... NB2: CB violates both lepton number and helicity and CB contains a calculable lepton neutrino condensate. NB3: A similar story holds for supernova neutrinos (they are believed to be ...
A Quantum-mechanical Model of Histone Modification in Gene
... p ({n j }) = (=ωs ) −1{ΔE − x − ∑ n j =ω j } ...
... p ({n j }) = (=ωs ) −1{ΔE − x − ∑ n j =ω j } ...
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.