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10 papers · 2 filters
Quantum simulations and experiments on Rabi oscillations of spin qubits: intrinsic {\sl vs} extrinsic damping
H. De Raedt, B. Barbara, S. Miyashita +3
Electron Paramagnetic Resonance experiments show that the decay of Rabi oscillations of ensembles of spin qubits depends noticeably on the microwave power and more precisely on the…
Coherent coupling of a superconducting flux-qubit to an electron spin ensemble in diamond
Xiaobo Zhu, Shiro Saito, Alexander Kemp +10
Electron-spin nitrogen-vacancy color centers in diamond are a natural candidate to act as a quantum memory for superconducting qubits because of their large collective coupling and…
How weak values emerge in joint measurements on cloned quantum systems
Holger F. Hofmann
A statistical analysis of optimal universal cloning shows that it is possible to identify an ideal (but non-positive) copying process that faithfully maps all properties of the ori…
Two-qubit Gate of Combined Single Spin Rotation and Inter-dot Spin Exchange in a Double Quantum Dot
R. Brunner, Y. -S. Shin, T. Obata +6
A crucial requirement for quantum information processing is the realization of multiple-qubit quantum gates. Here, we demonstrate an electron spin based all-electrical two-qubit ga…
Estimation of a quantum interaction parameter using weak measurements: Theory and experiment
Holger F. Hofmann, Michael E. Goggin, Marcelo P. Almeida +1
We investigate the estimation of a small interaction parameter from the outcomes of weak quantum measurements implemented by the interaction. The relation of weak values and sensit…
Complex joint probabilities as expressions of determinism in quantum mechanics
Holger F. Hofmann
The density operator of a quantum state can be represented as a complex joint probability of any two observables whose eigenstates have non-zero mutual overlap. Transformations to…