211 citations · 980 across the 14 of their papers we have counts for
14 papers
Coherent manipulation of single electron spins with Landau-Zener sweeps
Marko J. Rančić, Dimitrije Stepanenko
We propose a novel method to manipulate the state of a single electron spin in a semiconductor quantum dot (QD). The manipulation is achieved by tunnel coupling a QD, labeled ,…
Field-dependent superradiant quantum phase transition of molecular magnets in microwave cavities
Dimitrije Stepanenko, Mircea Trif, Oleksandr Tsyplyatyev +1
We find a superradiant quantum phase transition in the model of triangular molecular magnets coupled to the electric component of a microwave cavity field. The transition occurs wh…
Exchange-based CNOT gates for singlet-triplet qubits with spin orbit interaction
Jelena Klinovaja, Dimitrije Stepanenko, Bertrand I. Halperin +1
We propose a scheme for implementing the CNOT gate over qubits encoded in a pair of electron spins in a double quantum dot. The scheme is based on exchange and spin orbit interacti…
Hyperfine-induced decoherence in triangular spin-cluster qubits
Filippo Troiani, Dimitrije Stepanenko, Daniel Loss
We investigate hyperfine-induced decoherence in a triangular spin-cluster for different qubit encodings. Electrically controllable eigenstates of spin chirality (C_z) show decohere…
Singlet-triplet splitting in double quantum dots due to spin orbit and hyperfine interactions
Dimitrije Stepanenko, Mark Rudner, Bertrand I. Halperin +1
We analyze the low-energy spectrum of a two-electron double quantum dot under a potential bias in the presence of an external magnetic field. We focus on the regime of spin blockad…
Current-Conserving Aharonov-Bohm Interferometry with Arbitrary Spin Interactions
Minchul Lee, Dimitrije Stepanenko
We propose a general scattering matrix formalism that guarantees the charge conservation at junctions between conducting arms with arbitrary spin interactions. By using our formali…