Quantum Logical States and Operators for Josephson-like Systems
| dc.creator | Faoro, Lara | |
| dc.creator | Raffa, Francesco A. | |
| dc.creator | Rasetti, Mario | |
| dc.date | 2005-02-21 | |
| dc.date | 2005-12-14 | |
| dc.date.accessioned | 2026-07-07T09:45:07Z | |
| dc.date.available | 2026-07-07T09:45:07Z | |
| dc.description | We give a formal algebraic description of Josephson-type quantum dynamical systems, i.e., Hamiltonian systems with a cos theta-like potential term. The two-boson Heisenberg algebra plays for such systems the role that the h(1) algebra does for the harmonic oscillator. A single Josephson junction is selected as a representative of Josephson systems. We construct both logical states (codewords) and logical (gate) operators in the superconductive regime. The codewords are the even and odd coherent states of the two-boson algebra: they are shift-resistant and robust, due to squeezing. The logical operators acting on the qubit codewords are expressed in terms of operators in the enveloping of the two-boson algebra. Such a scheme appears to be relevant for quantum information applications. | |
| dc.description | 12 pages in RevTex. In press, Journal of Physics A/Letters | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0502503 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0502503 | |
| dc.identifier | J. Phys. A: Math. Gen. vol. 39 L111-L118 (2006) | |
| dc.identifier | doi:10.1088/0305-4470/39/5/L01 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/163098 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Quantum Logical States and Operators for Josephson-like Systems | |
| dc.type | text |