Quantum state engineering by superpositions of coherent states along a straight line with a single atomic state measurement

2010 ◽  
Vol 283 (14) ◽  
pp. 2872-2875 ◽  
Author(s):  
Zhen-Biao Yang ◽  
Bin Zhang ◽  
Shi-Biao Zheng
Keyword(s):  
Quantum State ◽  
Coherent States ◽  
Atomic State ◽  
Quantum State Engineering ◽  
Straight Line ◽  
State Measurement

A NOTE ON GENERALIZED SUPERPOSITION OF COHERENT STATES

1999 ◽  
Vol 13 (03n04) ◽  
pp. 131-134 ◽  
Author(s):  
R. RAGI ◽  
V. S. BAGNATO ◽  
B. BASEIA
Keyword(s):  
Quantum State ◽  
Coherent States ◽  
Single Atom ◽  
Recent Proposal ◽  
Field Interaction ◽  
Quantum State Engineering

In this comment we present an improvement of our recent proposal [Int. J. Mod. Phys.B12, 1495 (1998)] to generate a generalized superposition of two coherent states. The basic idea here is to use a dispersive atom-field interaction together with a single atom quantum state engineering.

scholarly journals Practical quantum teleportation of an unknown quantum state

2017 ◽  
Vol 95 (5) ◽  
pp. 498-503
Author(s):  
Syed Tahir Amin ◽  
Aeysha Khalique
Keyword(s):  
Quantum State ◽  
Quantum Teleportation ◽  
Bell State ◽  
Linear Optics ◽  
State Measurement ◽  
Dark Counts ◽  
Experimental Parameters ◽  
Unknown Quantum State ◽  
Down Conversion ◽  
Good Agreement

We present our model to teleport an unknown quantum state using entanglement between two distant parties. Our model takes into account experimental limitations due to contribution of multi-photon pair production of parametric down conversion source, inefficiency, dark counts of detectors, and channel losses. We use a linear optics setup for quantum teleportation of an unknown quantum state by the sender performing a Bell state measurement. Our theory successfully provides a model for experimentalists to optimize the fidelity by adjusting the experimental parameters. We apply our model to a recent experiment on quantum teleportation and the results obtained by our model are in good agreement with the experimental results.

QUANTUM STATE ENGINEERING BASED ON ELECTROMAGNETIC ANALOGIES AND NUMERICAL METHODS FOR SEMICONDUCTOR INTERSUBBAND LASERS

1998 ◽  
Vol 09 (04) ◽  
pp. 1235-1264 ◽  
Author(s):  
EMMANUEL ANEMOGIANNIS ◽  
ELIAS N. GLYTSIS ◽  
THOMAS K. GAYLORD
Keyword(s):  
Numerical Methods ◽  
Quantum Well ◽  
Semiconductor Lasers ◽  
Quantum State ◽  
Electromagnetic Optics ◽  
Quantum State Engineering ◽  
Systematic Effort ◽  
Mature Field

The design of semiconductor intersubband lasers using quantum state engineering based on electromagnetic analogies is a relatively new area. There has been little systematic effort in this direction as yet. The use of these analogies allows laser researchers to apply tools and methodologies found in the mature field of electromagnetic optics. The purpose of this paper is to describe the procedures by which intersubband quantum-well semiconductor lasers (or detectores) may be designed using these methodologies.

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