Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Bulletin of the American Physical Society

Quantum Interference between Three Spin Qubits

Andy S. Sachrajda, Gabriel Poulin-Lamarre, J. Thorgrimson, Sergei Studenikin, G. C. Aers, A. Kam, P. Zawadzki, Z. R. Wasilewski

Published Mar 4, 2014• 0 citations
OpenAlex

Related papers

Three-spin qubits under the influence of tunneling noise

Maximilian Russ, Guido Burkard

Bulletin of the American Physical Society•Mar 14, 2017•0 citations

Three-spin coherent oscillations and interference

Gabriel Poulin-Lamarre, J. Thorgrimson, Sergei Studenikin +5 more

We utilize magnetic field dependencies to identify two hitherto unobserved quantum interference processes in a triple quantum dot circuit. The first observation involves the interplay of Landau-Zener-St\"uckelberg behavior from two separate anticrossings between two energy levels that anticross twice as a function of a detuning parameter. The second process involves quantum interference between all-exchange and hyperfine qubits activated in a three-spin system.

Physical Review B•Mar 12, 2015•8 citations

Entangled two-spin qubits

Richard J. Fitzgerald

Physics Today•Apr 19, 2012•0 citations

Quantum Interference between Three Two-Spin States in a Double Quantum Dot

Sergei Studenikin, G. C. Aers, Ghislain Granger +5 more

Qubits based on the singlet (S) and the triplet (T(0), T(+)) states in double quantum dots have been demonstrated in separate experiments. It has been recently proposed theoretically that under certain conditions a quantum interference could occur from the interplay between these two qubit species. Here we report experiments and modeling that confirm these theoretical predictions and identify the conditions under which this interference occurs. Density matrix calculations show that the interference pattern manifests primarily via the occupation of the common singlet state. The S/T(0) qubit is found to have a much longer coherence time as compared to the S/T(+) qubit.

arXiv:1201.3859•Physical Review Letters•May 31, 2012•28 citations

The Role of Quantum Interference in Quantum Computing

Anwar Y. Shiekh

arXiv:cs/0507003•International Journal of Theoretical Physics•Aug 5, 2006•16 citations

Perfect state transfers by selective quantum interferences within complex spin networks

Gonzalo A. Álvarez, Mor Mishkovsky, Ernesto P. Danieli +3 more

We present a method that implements directional, perfect state transfers within a branched spin network by exploiting quantum interferences in the time domain. This method provides a tool for isolating subsystems from a large and complex one. Directionality is achieved by interrupting the spin-spin coupled evolution with periods of free Zeeman evolutions, whose timing is tuned to be commensurate with the relative phases accrued by specific spin pairs. This leads to a resonant transfer between the chosen qubits and to a detuning of all remaining pathways in the network, using only global manipulations. Since the transfer is perfect when the selected pathway is mediated by two or three spins, distant state transfers over complex networks can be achieved by successive recouplings among specific pairs or triads of spins. These effects are illustrated with a quantum simulator involving $^{13}\mathrm{C}$ NMR on leucine's backbone; a six-spin network.

arXiv:1005.2593•Physical Review A•Jun 15, 2010•35 citations
Qubits based on the singlet (S) and the triplet (T(0), T(+)) states in double quantum dots have been demonstrated in separate experiments. It has been recently proposed theoretically that under certain conditions a quantum interference could occur from the interplay between these two qubit species. Here we report experiments and modeling that confirm these theoretical predictions and identify the conditions under which this interference occurs. Density matrix calculations show that the interference pattern manifests primarily via the occupation of the common singlet state. The S/T(0) qubit is found to have a much longer coherence time as compared to the S/T(+) qubit.
We present a method that implements directional, perfect state transfers within a branched spin network by exploiting quantum interferences in the time domain. This method provides a tool for isolating subsystems from a large and complex one. Directionality is achieved by interrupting the spin-spin coupled evolution with periods of free Zeeman evolutions, whose timing is tuned to be commensurate with the relative phases accrued by specific spin pairs. This leads to a resonant transfer between the chosen qubits and to a detuning of all remaining pathways in the network, using only global manipulations. Since the transfer is perfect when the selected pathway is mediated by two or three spins, distant state transfers over complex networks can be achieved by successive recouplings among specific pairs or triads of spins. These effects are illustrated with a quantum simulator involving 13C^{13}\mathrm{C}13C NMR on leucine's backbone; a six-spin network.