Superconducting quantum devices

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Compact triple-mode microwave dielectric resonator filters

International Journal of Electronics Letters Taylor & Francis 8:2 (2020) 194-204

Authors:

Saad WO Luhaib, Mustafa S Bakr, Ian C Hunter, Nutapong Somjit
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A Differential-Fed Dual-Polarized High-Gain Filtering Antenna Based on SIW Technology for 5G Applications

Institute of Electrical and Electronics Engineers (IEEE) 00 (2020) 1-5

Authors:

Yasir IA Al-Yasir, Naser Ojaroudi Parchin, Mohammad N Fares, Ahmed Abdulkhaleq, Mustafa S Bakr, Mohammed Al-Sadoon, Jamal Kosha, Raed Abd-Alhameed
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Efficient Hamiltonian programming in qubit arrays with nearest-neighbour couplings

(2020)

Authors:

Takahiro Tsunoda, Gaurav Bhole, Stephen A Jones, Jonathan A Jones, Peter J Leek
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Rescaling Interactions for Quantum Control

PHYSICAL REVIEW APPLIED 13:3 (2020) 34002

Authors:

Gaurav Bhole, Takahiro Tsunoda, Peter J Leek, Jonathan A Jones

Abstract:

© 2020 American Physical Society. A powerful control method in experimental quantum computing is the use of spin echoes, employed to select a desired term in the system's internal Hamiltonian, while refocusing others. Here, we address a more general problem, describing a method to not only turn on and off particular interactions but also to rescale their strengths so that we can generate any desired effective internal Hamiltonian. We propose an algorithm based on linear programming for achieving time-optimal rescaling solutions in fully coupled systems of tens of qubits, which can be modified to obtain near-time-optimal solutions for rescaling systems with hundreds of qubits.
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Rescaling interactions for quantum control

Physical Review Applied American Physical Society 13:3 (2020) 034002

Authors:

Gaurav Bhole, Takahiro Tsunoda, Peter Leek, Jonathan Jones

Abstract:

A powerful control method in experimental quantum computing is the use of spin echoes, employed to select a desired term in the system’s internal Hamiltonian, while refocusing others. Here, we address a more general problem, describing a method to not only turn on and off particular interactions but also to rescale their strengths so that we can generate any desired effective internal Hamiltonian. We propose an algorithm based on linear programming for achieving time-optimal rescaling solutions in fully coupled systems of tens of qubits, which can be modified to obtain near-time-optimal solutions for rescaling systems with hundreds of qubits.
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