Effect of the Time Delay between Spin State Preparation and Measurement on Electron Spin Teleportation in a Covalent Donor-Acceptor-Radical System

Laura Bancroft, Yunfan Qiu, Matthew D. Krzyaniak*, Michael R. Wasielewski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We recently demonstrated photodriven quantum teleportation of an electron spin state in a covalent donor-acceptor-radical (D-A-R•) system. Following specific spin state preparation on R• with a microwave pulse, photoexcitation of A results in two-step electron transfer producing D•+-A-R-, where the spin state on R• is teleported to D•+. This study examines the effects of varying the time (τD) between spin state preparation and photoinitiated teleportation. Using pulse electron paramagnetic resonance spectroscopy, the spin echo of D•+ resulting from teleportation shows a damped oscillation as a function of τD that is simulated using a density matrix model, which provides a fundamental understanding of the echo behavior. Teleportation fidelity calculations also show oscillatory behavior as a function of τD due to the accumulation of a phase factor between ⟨Sx»and ⟨Sy⟩. Understanding experimental parameters intrinsic to quantum teleportation in molecular systems is crucial to leveraging this phenomenon for quantum information applications.

Original languageEnglish (US)
Pages (from-to)156-160
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume13
Issue number1
DOIs
StatePublished - Jan 13 2022

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Fingerprint

Dive into the research topics of 'Effect of the Time Delay between Spin State Preparation and Measurement on Electron Spin Teleportation in a Covalent Donor-Acceptor-Radical System'. Together they form a unique fingerprint.

Cite this