06 November 2020
America/Chicago timezone
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Rare-earth spin qubit selection using conventional spectroscopy methods
 
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Content: Rare-earth spin qubits are a promising quantum system because of narrow energy level transition, long optical and spin coherence lifetimes at visible and near infrared. Here, we present our efforts to develop a quantum sensing device based on a rare-earth spin qubit. We choose a single erbium ion as a spin qubit candidate because its atomic level transition is in telecom wavelength (1550 nm) which will benefit an integration into on-chip silicon photonic devices. We prepare for an erbium (Er) doped oxychlorides (OCl) of the lanthanides (Yb) nanocrystals on silicon (Si) and silicon carbide (SiC) substrates. We use two conventional spectroscopy methods for spin qubit selection on the substrate. First, we take infrared spectrum and look for absorption spectrum from the erbium ion. Any cluster of ions with induce absorption spectrum broadening. Second, we take an infrared spectrum with a small magnetic field from a Helmholtz coil. Absorption band splitting due to the magnetic field, Zeeman splitting, creates the two-level systems that we will use for a single qubit operation. Resolution of two the absorption bands due to the two-level system depends on spectral band width and the strength of magnetic field. We take the infrared spectrum of small areas of the sample, using a Fourier Transform Infrared spectrometer with infrared microscope, to achieve the two-level system. Once the selection is done, we will use a home-built microscope imaging system for a single photon detection of telecommunication light at low temperature and immersed in external magnetic fields to communicate with a single erbium ion spin qubit.
Id: 9
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Starting date:
06-Nov-2020   11:20 (America/Chicago)
Duration: 05'
Primary Authors: Dr. FAROOQ, Hira (Department of Physics and Astronomy, Texas Tech University, Lubbock, TX 79409, USA)
Co-Authors: Ms. DAVIDSON, Rachel (Department of Chemistry, Texas A&M University, College Station, TX 77843, USA)
Mr. SLOCUM, Jacob (Department of Physics and Astronomy, Texas Tech University, Lubbock, TX 79409, USA)
Mr. BROWN, Zachary (Department of Physics and Astronomy, Texas Tech University, Lubbock, TX 79409, USA)
Mr. ABRAHAM, Olu (Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX 79409, USA)
Dr. BANERJEE, Sarbajit (Department of Chemistry, Texas A&M University, College Station, TX 77843, USA)
Dr. KIM, Myoung-Hwan (Department of Physics and Astronomy, Texas Tech University, Lubbock, TX 79409, USA)
Ms. UDAYAKANTHA, Malsha (Department of Chemistry, Texas A&M University, College Station, TX 77843, USA)
Presenters: Mr. SLOCUM, Jacob
Dr. FAROOQ, Hira
Material: poster Poster
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