Electrically detected spin echoes of donor nuclei in silicon

McCamey, Dane R.; Boehme, Christoph; Morley, Gavin W.; Tol, Johan van

doi:10.1103/physrevb.85.073201

Cited by 11 publications

(15 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These assumptions are realistic, for instance, in EDMR where echo-type signals have been observed. 33,34 Under such conditions it is also possible to affect the RP lifetimes by applying short mw-pulses. 43,49 Once the reactivity is low it can also be treated as a perturbation, which almost does not change the spin evolution but nevertheless transfers the RP singlet-state population, r SS (t), into the detectable quantity F(t).…”

Section: Resultsmentioning

confidence: 99%

“…This method was originally proposed for triplet-state optically detected magnetic resonance. 31,32 Such pulse sequences were used in EDMR 33,34 and pronounced echo-type signals have been observed. Using the same concept it was possible to obtain more specific information about the systems under study and to observe the echo modulation 35 and pulsed Electron-Nuclear Double Resonance (ENDOR) signals.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Theory of pulsed reaction yield detected magnetic resonance

Nasibulov

Кулик

Kaptein

et al. 2012

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

We propose pulse sequences for Reaction Yield Detected Magnetic Resonance (RYDMR), which are based on refocusing the zero-quantum coherences in radical pairs by non-selective microwave pulses and using the population of a radical pair singlet spin state as an observable. The new experiments are analogues of existing EPR experiments such as the primary echo, Carr-Purcell, ESEEM, stimulated echo and Mims ENDOR. All pulse sequences are supported by analytical results and numerical calculations. The pulse sequences can be used for more efficient and highly detailed characterization of intermediates of chemical reactions and charge carriers in organic semiconductors.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theory of pulsed reaction yield detected magnetic resonance

Nasibulov

Кулик

Kaptein

et al. 2012

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…Electrically-detected magnetic resonance has been used with Si:P to sensitively probe nuclear spins with pulsed ENDOR at high 20,22 and low magnetic fields [80][81] . High magnetic fields have been used to polarize Si:P electron spins 82 and this has been transferred to nuclear spins with optical excitation 18 and entirely electrically 19 .…”

Section: X6 Electrically-detected Magnetic Resonance (Edmr)mentioning

confidence: 99%

“…This equilibrium polarization has been used to reach over 99.9% electronic polarization 18 at temperatures of 1.4 K, and some of this has been transferred to the 31 P nuclear spin, providing up to 68% nuclear polarization [18][19] . High fields up to 12 T have been used with EPR frequencies of up to 336 GHz 17,19 , and this has been combined with electrically detected EPR experiments to study devices with high sensitivity [17][18][19][20][21][22] . Si:P in very high magnetic fields (exceeding 30 T) has been studied with far-infrared spectroscopy at 2.2 K, providing an analogy for hydrogen on white dwarf stars 23 .…”

Section: X21 Qubit Initialization (Spin Polarization)mentioning

confidence: 99%

Chapter 3. Towards spintronic quantum technologies with dopants in silicon

Morley¹

2014

Electron Paramagnetic Resonance

View full text Add to dashboard Cite

Dopants in crystalline silicon such as phosphorus (Si:P) have electronic and nuclear spins with exceptionally long coherence times making them promising platforms for quantum computing and quantum sensing. The demonstration of single-spin single-shot readout brings these ideas closer to implementation. Progress in fabricating atomic-scale Si:P structures with scanning tunnelling microscopes offers a powerful route to scale up this work, taking advantage of techniques developed by the computing industry. The experimental and theoretical sides of this emerging quantum technology are reviewed with a focus on the period from 2009 to mid-2014.

show abstract

“…Electrical detection of orbital excitation is by orders of magnitude more sensitive than the optical technique (see also Refs. [8,9] for methods of electrical detection of spin resonances), enabling the detection of less than 10 5 electrons excited into the conduction band. It has the advantage that the sample is also the detector, enabling a unified theory of excitation and detection, which links the slow electrical response (millisecond) directly to the picosecond dynamics of the laser excitation.…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of electrically detected Ramsey fringes in P-doped Si

et al. 2015

View full text Add to dashboard Cite

This work describes detection of the laser preparation and subsequent coherent manipulation of the quantum states of orbital levels of donors in doped Si, by measuring the voltage drop across an irradiated Si sample. This electrical signal, which arises from thermal ionization of excited orbital states, and which is detected on a millisecond time scale by a voltmeter, leads to much more sensitive detection than can be had using optical methods, but has not before been quantitatively described from first principles. We present here a unified theory which relates the voltage drop across the sample to the wave function of the excited donors, and compare its predictions to experiments in which pairs of picosecond pulses from the Dutch free-electron laser FELIX are used to resonantly and coherently excite P donors in Si. Although the voltage drop varies on a millisecond time scale we are able to measure Ramsey oscillation of the excitation on a picosecond time scale, thus confirming that the donor wave function, and not just its excited state population, is crucial in determining the electrical signal. We are also able to extract the recombination rate coefficient to the ground state of the donor as well as the photoionization cross section of the excited state and phonon induced thermal ionization rate from the excited state. These quantities, which were previously of limited interest, are here shown to be important in the description of electrical detection, which, in our unoptimized configuration, is sensitive enough to enable us to detect the excitation of ∼10 7 donors.

show abstract

Electrically detected spin echoes of donor nuclei in silicon

Cited by 11 publications

References 32 publications

Theory of pulsed reaction yield detected magnetic resonance

Theory of pulsed reaction yield detected magnetic resonance

Chapter 3. Towards spintronic quantum technologies with dopants in silicon

Quantitative analysis of electrically detected Ramsey fringes in P-doped Si

Contact Info

Product

Resources

About