Crossover phenomena and resonances in quantum systems
نویسندگان
چکیده
Pablo Serra, Sabre Kais, and Nimrod Moiseyev Facultad de Matemática, Astronomı́a y Fı́sica, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina Department of Chemistry, Purdue University, West Lafayette, Indiana 47907 Department of Chemistry and the Minerva Center for Non-linear Physics of Complex Systems, Technion, Haifa 32000, Israel ~Received 22 January 2001; published 13 November 2001!
منابع مشابه
Universality in the BCS - BEC Crossover in Cold Fermion Gases
There are two cornerstones for the description of quantum condensation phenomena: Bose-Einstein condensation (BEC) in bosonic systems and BCSpairing for fermions. The underlying pictures for these phenomena are quite different – BEC is the macroscopic population of a single quantum state, while the BCS mechanism relies on the formation of Cooper pairs. However, both phenomena share a decisive f...
متن کاملبررسی تشدیدهای تداخل چند ترازی از طریق آهنگهای گذار در سیستمهای شش ترازی قویاً تحریک شده
In this paper, we study a new kind of multiphoton resonances in a strongly driven six-level quantum system, where one of its levels is coupled individually with the other two levels that have the constant energy separation E. Near the multiphoton resonance condition, a different behavior for the number of even or odd photons was found qualitatively, which could be explained by considering two c...
متن کاملConductance in quantum wires by three quantum dots arrays
A noninteracting quantum-dot arrays side coupled to a quantum wire is studied. Transport through the quantum wire is investigated by using a noninteracting Anderson tunneling Hamiltonian. The conductance at zero temperature develops an oscillating band with resonances and antiresonances due to constructive and destructive interference in the ballistic channel, respectively. Moreover, we have fo...
متن کاملConductance in quantum wires by three quantum dots arrays
A noninteracting quantum-dot arrays side coupled to a quantum wire is studied. Transport through the quantum wire is investigated by using a noninteracting Anderson tunneling Hamiltonian. The conductance at zero temperature develops an oscillating band with resonances and antiresonances due to constructive and destructive interference in the ballistic channel, respectively. Moreover, we have fo...
متن کاملUltra-Low Cost Full Adder Cell Using the nonlinear effect in Four-Input Quantum Dot Cellular Automata Majority Gate
In this article, a new approach for the efficient design of quantum-dot cellular automata (QCA) circuits is introduced. The main advantages of the proposed idea are the reduced number of QCA cells as well as increased speed, reduced power dissipation and improved cell area. In many cases, one needs to double the effect of a particular inter median signal. State-of-the-art designs utilize a kind...
متن کامل