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95 papers · 1 filter
Nuclear Spins in a Nanoscale Device for Quantum Information Processing
S. K. Ozdemir, A. Miranowicz, T. Ota +3
Coherent oscillations between any two levels from four nuclear spin states of I=3/2 have been demonstrated in a nanometre-scale NMR semiconductor device, where nuclear spins are al…
Ultrafast Critical Dynamics of Ferroelectric Phase Transition in PbGeTe
Rong Lu, Muneaki Hase, Masahiro Kitajima +2
Transient responses of the electronic excitation and coherent soft phonon are investigated both above and below the ferroelectric phase transition temperature T in Pb…
Paramagnetic GaN:Fe and ferromagnetic (Ga,Fe)N - relation between structural, electronic, and magnetic properties
A. Bonanni, M. Kiecana, C. Simbrunner +8
We report on the metalorganic chemical vapor deposition (MOCVD) of GaN:Fe and (Ga,Fe)N layers on c-sapphire substrates and their thorough characterization via high-resolution x-ray…
Coexistence of vector chiral order and Tomonaga-Luttinger liquid in the frustrated three-leg spin tube in a magnetic field
Masahiro Sato
The frustrated three-leg antiferromagnetic spin-1/2 tube with a weak interchain coupling in a magnetic field is investigated by means of Abelian bosonization techniques. It is clea…
Long-range ferromagnetic correlations between Anderson impurities in a semiconductor host
N. Bulut, K. Tanikawa, S. Takahashi +1
We study the two-impurity Anderson model for a semiconductor host using the quantum Monte Carlo technique. We find that the impurity spins exhibit ferromagnetic correlations with a…
Information-Disturbance Tradeoff in Quantum State Discrimination
Francesco Buscemi, Massimiliano F. Sacchi
When discriminating between two pure quantum states, there exists a quantitative tradeoff between the information retrieved by the measurement and the disturbance caused on the unk…