Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 2: Quantum Effects: Entanglement and Decoherence I
Q 2.5: Talk
Monday, March 23, 2015, 12:30–12:45, B/gHS
Quantum state read-out and entanglement generation with optical photons in a hybrid system — •Sumanta Das1, Sanli Faez2, and Anders S. Sørensen1 — 1Niels Bohr Institute, Copenhagen University — 2Leiden Institute of Physics, University of Leiden
We propose an efficient scheme for quantum information processing with optical photons in an engineered hybrid quantum system. Our novel hybrid comprise of a cooper pair box (CPB) qubit engineered near the surface of slot waveguide containing a molecule embedded in a polymer matrix inside it. The molecule is coupled to the CPB via D.C. stark effect that arise from the molecules large permanent dipole moment [1]. The molecule is supposed to have good coupling to the single guided modes in the slot waveguide [2,3]. We investigate how to achieve the strong coupling regime in such hybrid systems which can then be harnessed to study various quantum effects. In particular we propose schemes to achieve efficient qubit state read-out and transfer with optical photons. Furthermore, we propose schemes to create high fidelity entanglement between two remote hybrid systems. The scalability of this hybrid structure makes it promising for future integrated quantum communication circuitry.
[1] Y. L. A. Rezus, S. G. Walt, R. Lettow, A. Renn, G. Zumofen, S. Geotzinger, and V. Sandoghdar, Single- photon spectroscopy of a single molecule. Phys. Rev. Lett. (108), 093601, 2012. [2] M. Orrit, T. Ha, and V. Sandoghdar, Single-molecule optical spectroscopy. Chem. Sov. Rev. (43), 973, 2014.