Estimation of the possible reduction of the limiting frequency instability of the hydrogen generator using a beam of atoms in one quantum state

2018 ◽  
pp. 28-31 ◽  
Author(s):  
А. А. BELYAEV ◽  
N. A. DEMIDOV ◽  
V. A. POLYAKOV ◽  
YU. V. TIMOFEEV
Keyword(s):  
Quantum State ◽  
Frequency Instability ◽  
Hydrogen Generator

Estimation of the Possible Reduction of the Limit Frequency Instability of a Hydrogen Generator Using an Atom Beam in One Quantum State

2018 ◽  
Vol 61 (8) ◽  
pp. 779-783
Author(s):  
A. A. Belyaev ◽  
N. A. Demidov ◽  
V. A. Polyakov ◽  
Yu. V. Timofeev
Keyword(s):  
Quantum State ◽  
Frequency Instability ◽  
Hydrogen Generator ◽  
Atom Beam

Results of Experimental Studies of a Hydrogen Generator with Double Selection of Atoms by Quantum State

2018 ◽  
Vol 61 (8) ◽  
pp. 797-801
Author(s):  
Yu. V. Timofeev ◽  
V. A. Polyakov ◽  
A. A. Belyaev ◽  
N. A. Demidov
Keyword(s):  
Quantum State ◽  
Experimental Studies ◽  
Hydrogen Generator ◽  
Selection Of

Quantum state transfer in a quantum network: a quantum-optical implementation

1997 ◽  
Vol 44 (10) ◽  
pp. 1727-1736 ◽  
Author(s):  
S. J. VAN ENK , J. I. CIRAC , P. ZOLLE
Keyword(s):  
Quantum State ◽  
Quantum Network ◽  
Quantum State Transfer ◽  
State Transfer ◽  
Quantum Optical

The maximum mutual information without coding for binary quantum-state signals

1998 ◽  
Vol 45 (2) ◽  
pp. 269-282 ◽  
Author(s):  
MASAO OSAKI, OSAMU HIROTA MASASHI BAN
Keyword(s):  
Mutual Information ◽  
Quantum State ◽  
Maximum Mutual Information

Long-Term Frequency Instability of a Portable Cold 87Rb Atomic Clock

2018 ◽  
Author(s):  
F. G. Ascarrunz ◽  
Y. O. Dudin ◽  
Maria. C. Delgado Aramburo ◽  
J. Savory ◽  
S.R. Jefferts
Keyword(s):  
Atomic Clock ◽  
Frequency Instability ◽  
Term Frequency

Probability and Explanation

2017 ◽  
Author(s):  
Richard Healey
Keyword(s):  
Quantum Theory ◽  
Quantum State ◽  
Causal Explanation ◽  
Born Rule ◽  
Correct Application

We can use quantum theory to explain an enormous variety of phenomena by showing why they were to be expected and what they depend on. These explanations of probabilistic phenomena involve applications of the Born rule: to accept quantum theory is to let relevant Born probabilities guide one’s credences about presently inaccessible events. We use quantum theory to explain a probabilistic phenomenon by showing how its probabilities follow from a correct application of the Born rule, thereby exhibiting the phenomenon’s dependence on the quantum state to be assigned in circumstances of that type. This is not a causal explanation since a probabilistic phenomenon is not constituted by events that may manifest it: but each of those events does depend causally on events that actually occur in those circumstances. Born probabilities are objective and sui generis, but not all Born probabilities are chances.

Assigning Values and States

2017 ◽  
Author(s):  
Richard Healey
Keyword(s):  
Quantum State ◽  
Density Operator ◽  
Entangled State ◽  
Physical Situation ◽  
Born Rule ◽  
Correct Assignment ◽  
Significant Magnitude ◽  
Good Advice ◽  
Empirical Significance ◽  
Important Idea

If a quantum state is prescriptive then what state should an agent assign, what expectations does this justify, and what are the grounds for those expectations? I address these questions and introduce a third important idea—decoherence. A subsystem of a system assigned an entangled state may be assigned a mixed state represented by a density operator. Quantum state assignment is an objective matter, but the correct assignment must be relativized to the physical situation of an actual or hypothetical agent for whom its prescription offers good advice, since differently situated agents have access to different information. However this situation is described, it is true, empirically significant magnitude claims that make the description correct, while others provide the objective grounds for the agent’s expectations. Quantum models of environmental decoherence certify the empirical significance of these magnitude claims while also licensing application of the Born rule to others without mentioning measurement.

Entanglement

2017 ◽  
Author(s):  
Richard Healey
Keyword(s):  
Quantum Theory ◽  
Quantum State ◽  
Physical Condition ◽  
Physical System ◽  
Polarization State ◽  
Quantum Systems ◽  
Ghz State ◽  
Mathematical Representation ◽  
Entangled State ◽  
Physical Relation

Often a pair of quantum systems may be represented mathematically (by a vector) in a way each system alone cannot: the mathematical representation of the pair is said to be non-separable: Schrödinger called this feature of quantum theory entanglement. It would reflect a physical relation between a pair of systems only if a system’s mathematical representation were to describe its physical condition. Einstein and colleagues used an entangled state to argue that its quantum state does not completely describe the physical condition of a system to which it is assigned. A single physical system may be assigned a non-separable quantum state, as may a large number of systems, including electrons, photons, and ions. The GHZ state is an example of an entangled polarization state that may be assigned to three photons.

Atom-field quantum state manipulation and storage

2005 ◽  
Author(s):  
A. Dantan ◽  
A. Bramati ◽  
M. Pinard
Keyword(s):  
Quantum State ◽  
And Storage
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