Coherent superpositions of states in coupled Hilbert-space using step by step Morris-Shore transformation

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• 作者：Maghsoud Saadati-Niari ^{m.saadati@uma.ac.ir" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Morris&ndash ; Shore transformation ; Coincident pulses ; Coherent ; Superposition
• 刊名：Annals of Physics
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：372
• 期：Complete
• 页码：138-148
• 全文大小：496 K

文摘

Creation of coherent superpositions in quantum systems with N_a$N_a$ states in the lower set and N_b$N_b$ states in the upper set is presented. The solution is drived by using the Morris–Shore transformation, which step by step reduces the fully coupled system to a three-state a66" title="Click to view the MathML source">Λ$\Lambda$-like system and a set of decoupled states. It is shown that, for properly timed pulse, robust population transfer from an initial ground state (or superposition of a6420" title="Click to view the MathML source">M$M$ ground states) to an arbitrary coherent superposition of the ground states can be achieved by coincident pulses and/or STIRAP techniques.