Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Spiller, T P"'
Publikováno v:
Journal of Physics: Conference Series, 1638 (2020) 012013
In this contribution we consider an advantageous building block with potential for various quantum applications: a device based on coupled spins capable of generating and sharing out an entangled pair of qubits. Our model device is a dimerised spin c
Externí odkaz:
http://arxiv.org/abs/2005.13250
Publikováno v:
Proc. Roy. Soc. A, 476, 2243 (2020)
We propose the use of hybrid entanglement in an entanglement swapping protocol, as means of distributing a Bell state with high fidelity to two parties, Alice and Bob. The hybrid entanglement used in this work is described as a discrete variable (Foc
Externí odkaz:
http://arxiv.org/abs/2004.02646
Autor:
Duffus, S. N. A., Bjergstrøm, K. N., Dwyer, V. M., Samson, J. H., Spiller, T. P., Zagoskin, A. M., Munro, W. J., Nemoto, Kae, Everitt, M. J.
Publikováno v:
Phys. Rev. B 94, 064518 (2016)
In this paper we consider the modelling and simulation of open quantum systems from a device engineering perspective. We derive master equations at different levels of approximation for a Superconducting Quantum Interference Device (SQUID) ring coupl
Externí odkaz:
http://arxiv.org/abs/1605.06268
Publikováno v:
Eur. Phys. J. D (2016) 70: 189
Anderson localisation is an important phenomenon arising in many areas of physics, and here we explore it in the context of quantum information devices. Finite dimensional spin chains have been demonstrated to be important devices for quantum informa
Externí odkaz:
http://arxiv.org/abs/1603.01881
High-precision gyroscopes are a key component of inertial navigation systems. By considering matter wave gyroscopes that make use of entanglement it should be possible to gain some advantages in terms of sensitivity, size, and resources used over une
Externí odkaz:
http://arxiv.org/abs/1503.02450
Entangled states of rotating, trapped ultracold bosons form a very promising scenario for quantum metrology. In order to employ such states for metrology, it is vital to understand their detailed form and the enhanced accuracy with which they could m
Externí odkaz:
http://arxiv.org/abs/1304.7348
The iconic Schr\"odinger's cat state describes a system that may be in a superposition of two macroscopically distinct states, for example two clearly separated oscillator coherent states. Quite apart from their role in understanding the quantum clas
Externí odkaz:
http://arxiv.org/abs/1212.4795
Publikováno v:
Phys. Rev. A 86, 062117 (2012)
We present a new quasi-probability distribution function for ensembles of spin-half particles or qubits that has many properties in common with Wigner's original function for systems of continuous variables. We show that this function provides clear
Externí odkaz:
http://arxiv.org/abs/1210.2300
Autor:
Proctor, T. J., Spiller, T. P.
Publikováno v:
Phys. Rev. A 86, 062304 (2012)
We discuss the desired criteria for a two-qubit phase gate and present a method for realising such a gate for quantum computation that is measurement-free and low error. The gate is implemented between qubits via an intermediate bus mode. We take a c
Externí odkaz:
http://arxiv.org/abs/1208.5238
Publikováno v:
Phys. Rev. A 90, 023837 (2014)
In this paper we consider a two-dimensional metamaterial comprising an array of qubits (two level quantum objects). Here we show that a two-dimensional quantum metamaterial may be controlled, e.g. via the application of a magnetic flux, so as to prov
Externí odkaz:
http://arxiv.org/abs/1208.4555