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VERSION:2.0
PRODID:Icfo
X-PUBLISHED-TTL:P1W
BEGIN:VEVENT
UID:6a1d350516061
DTSTART:20260601T100000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20260601T110000Z
LOCATION:Seminar Room
SUMMARY:ICFO | JAIME TRAVESEDO
CLASS:PUBLIC
DESCRIPTION:Pushing the sensitivity of nuclear magnetic resonance spectrosc
 opy down to the single nuclear spin limit is a long-standing goal\, and wo
 uld find applications both in quantum computing and in high-precision spec
 troscopy. So far\, the only mechanisms to detect individual nuclear spins 
 is using an electron spin in close proximity\, which couples via hyperfine
  interaction and acts as a local antenna. Therefore\, individual nuclear s
 pin detection requires single electron spin readout.&nbsp\;\nUntil recentl
 y\, detection of single electron spins has been limited to electrical or o
 ptical readout\, which achieves single electron spin detection only for ce
 rtain specific systems\, thus limiting the range of study. Our group has r
 ecently developed a new method to detect electron spins at 10~mK. By coupl
 ing the electron spin to a low-mode-volume\, high-quality-factor resonator
 \, the radiative relaxation rate of the spin is enhanced by the Purcell ef
 fect. The spontaneous emission is detected by a novel detector relying on 
 superconducting transmon qubit\, the SMPD. As it relies solely on the magn
 etic dipole coupling of the spin magnetic moment to a resonator\, this all
 -microwave method should be in principle broadly applicable to a large ran
 ge of unpaired electron spin systems.\nIn this presentation\, we demonstra
 te a range of new methods to readout and measure the spectrum of individua
 l nuclear spins coupled to an electron spin\, itself measured by microwave
  photon counting. We apply these methods to the operation of a two-nuclear
 -spin-qubit register\, and to the high-resolution spectroscopy of an indiv
 idual nuclear-spin-9/2 impurity.
DTSTAMP:20260601T073013Z
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