Rubidium resonant squeezed light from a diode-pumped
... the light inside the medium. Also here the squeezed light needs to be narrowband in order to t into the transparency window, but also pulsed to spatially t into the ensemble of atoms. Recently, the delay of the squeezed light in the EIT medium was also shown experimentally. In [2] the storage of 6 ...
... the light inside the medium. Also here the squeezed light needs to be narrowband in order to t into the transparency window, but also pulsed to spatially t into the ensemble of atoms. Recently, the delay of the squeezed light in the EIT medium was also shown experimentally. In [2] the storage of 6 ...
The Homological Nature of Entropy
... was developed further by Riemann, Picard, Vessiot, Lie, Poincare and Cartan, for systems of differential equations; it is also a theory of information. In another direction Rene Thom claimed that information must have a topological content (see [3]); he gave the example of the unfolding of the coupl ...
... was developed further by Riemann, Picard, Vessiot, Lie, Poincare and Cartan, for systems of differential equations; it is also a theory of information. In another direction Rene Thom claimed that information must have a topological content (see [3]); he gave the example of the unfolding of the coupl ...
Quantum States of Neutrons in the Gravitational Field
... What is gravity? In many respects this may be one of the most important questions ever asked. Answers to it have always been milestones on the way from ancient natural philosophy to modern science. Every physicist knows the legendary free fall experiments of Galileo Galilei at the dawn of empiricism ...
... What is gravity? In many respects this may be one of the most important questions ever asked. Answers to it have always been milestones on the way from ancient natural philosophy to modern science. Every physicist knows the legendary free fall experiments of Galileo Galilei at the dawn of empiricism ...
Superposition, Entanglement, and Raising Schrödinger’s Cat Nobel Lecture, December 8, 2012
... by storing the ions in an RF (Paul) trap. One challenge was that detection by optical pumping was (and still is) not feasible because of the short wavelengths required. Therefore, in a heroic set of experiments, state preparation was accomplished through charge exchange with a polarized Cs beam that ...
... by storing the ions in an RF (Paul) trap. One challenge was that detection by optical pumping was (and still is) not feasible because of the short wavelengths required. Therefore, in a heroic set of experiments, state preparation was accomplished through charge exchange with a polarized Cs beam that ...
Three Myths About Time Reversal in Quantum Theory 1. Introduction
... outcomes in an experiment, we suppose that this will remain the case when the entire experimental setup is ‘symmetry-transformed’, by say a rigid rotation or by a translation in space. And vice versa: if two symmetry-transformed states are mutually exclusive, then we assume the original states must ...
... outcomes in an experiment, we suppose that this will remain the case when the entire experimental setup is ‘symmetry-transformed’, by say a rigid rotation or by a translation in space. And vice versa: if two symmetry-transformed states are mutually exclusive, then we assume the original states must ...
Extending coherent state transforms to Clifford analysis
... On the other hand, in quantum physics, Clifford algebra or spinor representation valued functions describe some systems with internal degrees of freedom, such as particles with spin. Recall that the Segal-Bargmann transform,1,19,20 for a particle on R, establishes the unitary equivalence of the Schr ...
... On the other hand, in quantum physics, Clifford algebra or spinor representation valued functions describe some systems with internal degrees of freedom, such as particles with spin. Recall that the Segal-Bargmann transform,1,19,20 for a particle on R, establishes the unitary equivalence of the Schr ...
Hyperradiance-a new paradigm in 60 years of superradiance
... of higher excited multi-particle entangled Dicke states is challenging, so mostly systems with no more than one excitation have been realized. In these systems the dynamics is still quite complex, yet superradiance and also subradiance can be fruitfully explored [14–22]. Experiments on superradiance ...
... of higher excited multi-particle entangled Dicke states is challenging, so mostly systems with no more than one excitation have been realized. In these systems the dynamics is still quite complex, yet superradiance and also subradiance can be fruitfully explored [14–22]. Experiments on superradiance ...
Phase shifts of atomic de Broglie waves at an
... of evanescent waves appears very promising [2, 3]. In view of the future applications fo evanescent wave mirrors, a detailed investigation of their optical properties seems appropriate. For some basic purposes (for example, the def ection of an atomic beam), the characterization of the geometric opt ...
... of evanescent waves appears very promising [2, 3]. In view of the future applications fo evanescent wave mirrors, a detailed investigation of their optical properties seems appropriate. For some basic purposes (for example, the def ection of an atomic beam), the characterization of the geometric opt ...
Superconducting Circuits and Quantum Computation—T. P. Orlando
... Figure 1a shows a SEM image of the persistent current qubit (inner loop) and the measuring dc SQUID (outer) loop. A schematic of the qubit and the measuring circuit is shown in Figure 1b, where the Josephson junctions are denoted by x's. The sample is fabricated at MIT Lincoln Laboratory in niobium ...
... Figure 1a shows a SEM image of the persistent current qubit (inner loop) and the measuring dc SQUID (outer) loop. A schematic of the qubit and the measuring circuit is shown in Figure 1b, where the Josephson junctions are denoted by x's. The sample is fabricated at MIT Lincoln Laboratory in niobium ...
BQP and the Polynomial Hierarchy
... Here BQLOGTIME is the class of problems solvable by logarithmic-size quantum circuits, with random access to the input string x1 . . . xn . It should not be confused with the much larger class BQNC, of problems solvable by logarithmic-depth quantum circuits. The relation problem that we use to separ ...
... Here BQLOGTIME is the class of problems solvable by logarithmic-size quantum circuits, with random access to the input string x1 . . . xn . It should not be confused with the much larger class BQNC, of problems solvable by logarithmic-depth quantum circuits. The relation problem that we use to separ ...
spins_unit_schrodinger_time_evolution
... observations of this state after time t differ from at t=0? What name might you give such an initial “pure” state to explain how it behaves with time? ...
... observations of this state after time t differ from at t=0? What name might you give such an initial “pure” state to explain how it behaves with time? ...
Document
... In two dimensions, we can view the vortices as point particle excitations of the superfluid. What is the quantum mechanics of these “particles” ? ...
... In two dimensions, we can view the vortices as point particle excitations of the superfluid. What is the quantum mechanics of these “particles” ? ...
arXiv:quant-ph/0202122 v1 21 Feb 2002
... quantum channels. We then clarify these concepts (in particular entanglement and channels) with several examples in Chapter 3, and in Chapter 4 we discuss the most important tasks of quantum information in greater detail. The last three Chapters are devoted to a more quantitative analysis, where we ...
... quantum channels. We then clarify these concepts (in particular entanglement and channels) with several examples in Chapter 3, and in Chapter 4 we discuss the most important tasks of quantum information in greater detail. The last three Chapters are devoted to a more quantitative analysis, where we ...
Document
... We consider entanglement as a dynamic property of quantum states and examine its behavior in time and space. Some interesting findings: (1) adding more noise helps fight phase-noise disentanglement, and (2) high entanglement induces spatial localization, equivalent to a quantum memory force. • Ting ...
... We consider entanglement as a dynamic property of quantum states and examine its behavior in time and space. Some interesting findings: (1) adding more noise helps fight phase-noise disentanglement, and (2) high entanglement induces spatial localization, equivalent to a quantum memory force. • Ting ...
StMalloQuantumComputing
... Quantum Latin word meaning “some quantity”. In physics used with the same meaning as the word discrete in mathematics, i.e., some quantity or variable that can take only sharply defined values as opposed to a continuously varying quantity. The concepts continuum and continuous are known from geome ...
... Quantum Latin word meaning “some quantity”. In physics used with the same meaning as the word discrete in mathematics, i.e., some quantity or variable that can take only sharply defined values as opposed to a continuously varying quantity. The concepts continuum and continuous are known from geome ...
Do we really understand quantum mechanics?
... physics in such an abstract way, with no apparent relation with the classical description of the motion of a particle? One can guess how relieved many physicists felt when another point of view emerged, a point of view which looked at the same time much simpler and in the tradition of the physics of ...
... physics in such an abstract way, with no apparent relation with the classical description of the motion of a particle? One can guess how relieved many physicists felt when another point of view emerged, a point of view which looked at the same time much simpler and in the tradition of the physics of ...