Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session S03: Precision Spectroscopy of Atoms and Molecules in SolidsInvited Live Streamed
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Chair: Andrew Jayich, UCSB Room: Ballroom 111 B |
Thursday, June 8, 2023 10:30AM - 11:00AM |
S03.00001: Optical and spin properties of alkali atoms in cryogenic solids Invited Speaker: Jonathan D Weinstein We have studied alkali-metal atoms trapped in solid matrices of neon and parahydrogen. While the optical transitions of the alkali atoms suffer from significant broadening, it is possible to optically pump and measure the spin states of the trapped atoms. Using optically detected magnetic resonance spectroscopy, we have measured the ensemble spin transverse relaxation time (T2*). T2* varies significantly between different species and spin superposition states; T2* times on the order of 10-4 s have been observed. Using dynamical decoupling techniques, spin coherence times (T2) as long as 0.1 s have been observed in the matrix, which is promising for quantum sensing. Towards that goal, NMR detection of co-trapped nuclear spins has been demonstrated using ensembles of atoms. If these same measurements can be performed with single atoms, it would enable NMR measurements of single molecules co-trapped in the matrix. We have performed state-selective detection of single atoms in the solid; progress towards single-molecule NMR will be discussed. |
Thursday, June 8, 2023 11:00AM - 11:30AM |
S03.00002: Precision measurements in solids: challenges and opportunities Invited Speaker: Amar C Vutha Desperate times call for desperate measures. The scarcity of experimental evidence for new physics at colliders, in the face of cosmological mysteries such as dark matter and the baryon asymmetry of the universe, demands that we search for new physics in new ways. In this context, constraints from precision AMO measurements continue to probe some of the highest energy scales that are experimentally accessible today. The desire to gain ever-higher precision from AMO experiments naturally leads one to consider measurements using atoms, ions and molecules trapped within solids. On the one hand, such systems offer easy access to large numbers of trapped particles within a compact volume. But these attractions have to be balanced against open questions about the ability to prepare quantum states, maintain coherence and perform high-SNR measurements in solids. I will discuss some of the challenges and opportunities for precision measurements in solids, using examples from experiments in my group. |
Thursday, June 8, 2023 11:30AM - 12:00PM |
S03.00003: Indistinguishable single photon emission from single Er3+ ions Invited Speaker: Jeff D Thompson Atomic defects in solid-state crystals are widely explored as single-photon sources and quantum memories for quantum communications networks based on quantum repeaters. Rare earth ions, in particular Er3+, have several unique features including a telecom-band optical transition facilitating long-distance entanglement distribution, and compatibility with a broad range of materials and device structures. I will give an overview of recent progress including fast photon emission from single Er3+ ions using silicon nanophotonic cavities [1], single-shot spin readout [2], sub-wavelength addressing based on spectral multiplexing [3] and coherent control of nearby nuclear spins [4]. Through systematic materials exploration, we have significantly extended the spin and optical coherence times of Er3+ ions, enabling indistinguishable single-photon emission [5]. I will conclude by discussing ongoing efforts to probe spin-spin interactions, and how these advances may be combined into a practical quantum repeater architecture. |
Thursday, June 8, 2023 12:00PM - 12:30PM |
S03.00004: Single rare-earth ions in solid state hosts: a testbed for quantum networks and nuclear spin physics Invited Speaker: Andrei Ruskuc Optically addressed spin defects in solid-state hosts are a versatile platform for studying fundamental physics and building quantum networks. Their microscopic environment is resource-rich containing nuclear and electronic spins, they contain an intrinsic interface to optical photons (ideal carriers of quantum information) and are compatible with scalable device engineering. Rare-earth ions in solid-state hosts have been a mainstay of classical optical communication infrastructure. Their application to quantum information science started with dilute ensemble-based optical quantum memories. However, more recently, coupling to nanophotonic cavities has enabled spectroscopy and quantum control of individual emitters. My talk will focus on the application of one such platform (single 171Yb3+ ions in YVO4) in two contexts: |
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