Rydberg-atom-mediated nondestructive readout of collective rotational states in polar-molecule arrays

Elena Kuznetsova, Seth T. Rittenhouse, H. R. Sadeghpour, and Susanne F. Yelin
Phys. Rev. A 94, 032325 – Published 27 September 2016

Abstract

We analyze the possibility to exploit charge-dipole interaction between a single polar molecule or a one-dimensional (1D) molecular array and a single Rydberg atom to read out molecular rotational populations. We calculate the energy shift of a single Rb(60s) atom interacting with a single KRb or RbYb molecule in their lowest two rotational states. At atom-molecule distances, relevant to trapping of molecules in optical lattices, the Rydberg electron energy shifts conditioned on the rotational states, are of the order of several MHz. Atom excitation to a Rydberg state and detection of atomic fluorescence conditioned on a rotational state preserves the molecule, making our scheme a nondestructive measurement of the rotational state. Similarly, a 1D array of polar molecules can shift the electron energy of a blockaded Rydberg superatom. We consider a scheme to read out the molecular array collective rotational states using the conditioned Rydberg energy shifts, and numerically analyze a system with three and five KRb or RbYb molecules interacting with Rb(60s) superatom.

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  • Received 2 May 2016

DOI:https://doi.org/10.1103/PhysRevA.94.032325

©2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

Elena Kuznetsova1,2,3, Seth T. Rittenhouse4, H. R. Sadeghpour5, and Susanne F. Yelin5,6,7

  • 1Rzhanov Institute of Semiconductor Physics, Novosibirsk, 630090, Russia
  • 2Russian Quantum Center, 100 Novaya Street, Skolkovo, Moscow Region, 143025, Russia
  • 3Institute of Applied Physics, 46 Ulyanov Street, Nizhny Novgorod, 603950, Russia
  • 4Department of Physics, The United States Naval Academy, Annapolis, Maryland 21402, USA
  • 5ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
  • 6Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, Connecticut 06269
  • 7Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA

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Issue

Vol. 94, Iss. 3 — September 2016

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