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7 papers · 2 filters
Quantum discord determines the interferometric power of quantum states
Davide Girolami, Alexandre M. Souza, Vittorio Giovannetti +6
Quantum metrology exploits quantum mechanical laws to improve the precision in estimating technologically relevant parameters such as phase, frequency, or magnetic fields. Probe st…
Protected quantum computing: Interleaving gate operations with dynamical decoupling sequences
Jingfu Zhang, Alexandre M. Souza, Frederico Dias Brandao +1
Implementing precise operations on quantum systems is one of the biggest challenges for building quantum devices in a noisy environment. Dynamical decoupling (DD) attenuates the de…
Quantum state transfer in disordered spin chains: How much engineering is reasonable?
Analia Zwick, Gonzalo A. Álvarez, Joachim Stolze +1
The transmission of quantum states through spin chains is an important element in the implementation of quantum information technologies. Speed and fidelity of transfer are the mai…
Quantum simulations of localization effects with dipolar interactions
Gonzalo A. Alvarez, Robin Kaiser, Dieter Suter
Quantum information processing often uses systems with dipolar interactions. We use a nuclear spin-based quantum simulator, to study the spreading of information in such a dipolar-…
High precision nano scale temperature sensing using single defects in diamond
Philipp Neumann, Ingmar Jakobi, Florian Dolde +11
Measuring local temperature with a spatial resolution on the order of a few nanometers has a wide range of applications from semiconductor industry over material to life sciences.…
Faithful Solid State Optical Memory with Dynamically Decoupled Spin Wave Storage
Marko Lovrić, Alban Ferrier, Dieter Suter +1
We report an optical memory in a rare earth doped crystal with long storage times, up to 20 ms, together with an optical bandwidth of 1.5 MHz. This is obtained by transferring opti…