Engineering entangled microwave photon states through multiphoton interactions between two cavity fields and a superconducting qubit
| Autor: | Yu-xi Liu, Changqing Wang, Yan-Jun Zhao, Xiaobo Zhu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Superconductivity
Physics Coupling Quantum Physics Multidisciplinary Photon FOS: Physical sciences 01 natural sciences Potential energy Article 010305 fluids & plasmas Resonator Transmission line Qubit Quantum mechanics 0103 physical sciences Quantum Physics (quant-ph) 010306 general physics Microwave |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | It has been shown that there are not only transverse but also longitudinal couplings between microwave fields and a superconducting qubit with broken inversion symmetry of the potential energy. Using multiphoton processes induced by longitudinal coupling fields and frequency matching conditions, we design a universal algorithm to produce arbitrary superpositions of two-mode photon states of microwave fields in two separated transmission line resonators, which are coupled to a superconducting qubit. Based on our algorithm, we analyze the generation of evenly-populated states and NOON states. Compared to other proposals with only single-photon process, we provide an efficient way to produce entangled microwave photon states when the interactions between superconducting qubits and microwave fields are in the strong and ultrastrong regime. |
| Databáze: | OpenAIRE |
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