搜索结果: 1-15 共查到“知识库 应用物理学 Quantum”相关记录22条 . 查询时间(0.276 秒)
Resilience of gated avalanche photodiodes against bright illumination attacks in quantum cryptography
quantum cryptography gated avalanche photodiodes
2011/9/13
Semiconductor avalanche photodiodes (APDs) are commonly used for single photon detection in quantum key distribution. Recently, many attacks using bright illumination have been proposed to manipulate ...
The quantum N-body problem with a minimal length
The quantum N-body problem minimal length
2010/12/23
The quantum $N$-body problem is studied in the context of nonrelativistic quantum mechanics with a one-dimensional deformed Heisenberg algebra of the form $[\hat x,\hat p]=i(1+\beta \hat p^2)$, leadin...
Solitonic Models Based on Quantum Groups and the Standard Model
Solitonic Models Quantum Groups the Standard Model
2010/12/23
The idea that the elementary particles might have the symmetry of knots has had a long history. In any current formulation of this idea, however, the knot must be quantized. The present review is a su...
On the measure problem in slow roll inflation and loop quantum cosmology
slow roll inflation loop quantum cosmology
2010/12/27
We consider the measure problem in standard slow-roll inflationary models from the perspective of loop quantum cosmology (LQC). Following recent results by Ashtekar and Sloan, we study the probabilit...
Holographically smeared Fermi surface: Quantum oscillations and Luttinger count in electron stars
Holographically smeared Fermi surface Quantum oscillations
2010/12/23
We apply a small magnetic field to strongly interacting matter with a gravity dual description as an electron star. These systems are both metallic and quantum critical at low energies. The resulting ...
Spin operator matrix elements in the quantum Ising chain: fermion approach
Spin operator matrix elements quantum Ising chain
2010/12/27
Using some modification of the standard fermion technique we derive factorized formula for spin operator matrix elements (form-factors) between general eigenstates of the Hamiltonian of quantum Ising ...
Manipulation of the Lande g-factor in InAs quantum dots through application of anisotropic gate potentials
Lande g-factor anisotropic gate potentials
2010/11/19
We study the variation in the Lande g-factor of electron spins induced by an anisotropic gate
potential in InAs quantum dots for potential use as non-charge based logic devices. In this paper,we pres...
Perfect eavesdropping on a quantum cryptography system
cryptography system Quantum Physics
2010/11/8
The stated goal of quantum key distribution (QKD) is to grow a secret key securely between two parties with a minimum of additional assumptions. The number of assumptions has been continuously reduced...
Riemann-Hilbert Problem and Quantum Field Theory: Integrable Renormalization, Dyson-Schwinger Equations
Riemann-Hilbert Problem Quantum Field Theory
2010/11/19
In the first purpose, we concentrate on the theory of quantum integrable systems underlying the Connes-Kreimer approach. We introduce a new family of Hamiltonian systems depended on the perturbative ...
Dependence of the Macroscopic Quantum Tunneling Rate on Josephson Junction Area
Macroscopic Quantum Josephson Junction Area
2010/11/24
We have carried out systematic Macroscopic Quantum Tunneling (MQT) experiments on Nb/Al-
AlOx/Nb Josephson junctions (JJs) of different areas. Employing on-chip lumped element inductors,we have decou...
Universal routes to spontaneous PT-symmetry breaking in non-hermitian quantum systems
Universal routes PT-symmetry non-hermitian quantum systems
2010/11/17
PT-symmetric systems can have a real spectrum even when their Hamiltonian is non-hermitian, but develop a complex spectrum when the degree of non-hermiticity increases. Here we utilize random-matrix ...
Quantum Mechanical Probability of Electrodynamic Particle(s)
Quantum Mechanical Probability Electrodynamic Particle(s)
2010/11/16
A distribution of electromagnetic fields presents a statistical assembly of a particular type, which is at scale h a quantum statistical assembly itself and has also been instrumental to concretisati...
We consider a quantum theory based on a Galois field. In this approach infinities cannot exist, the cosmological constant problem does not arise, and one irreducible representation (IR) of the symmet...
Dualities and Identities for Maximal-Entanglement Quantum Codes
Dualities Identities Maximal-Entanglement Quantum Codes
2010/11/8
The dual of an entanglement-assisted quantum error-correcting (EAQEC) code is the code resulting from exchanging the original code's information qubits for its ebits and vice versa. As an introduction...
Non-contextuality and free will in modal quantum theory
Non-contextuality free will modal quantum theory
2010/11/8
Modal quantum theory (MQT) is a simplified cousin of ordinary Hilbert space quantum theory. We show that two important theorems of actual quantum theory, the Kochen-Specker theorem excluding non-conte...