Geometric perspective on quantum parameter estimation

JS Sidhu, P Kok - AVS Quantum Science, 2020 - pubs.aip.org
Quantum metrology holds the promise of an early practical application of quantum
technologies, in which measurements of physical quantities can be made with much greater …

New class of quantum error-correcting codes for a bosonic mode

MH Michael, M Silveri, RT Brierley, VV Albert… - Physical Review X, 2016 - APS
We construct a new class of quantum error-correcting codes for a bosonic mode, which are
advantageous for applications in quantum memories, communication, and scalable …

Quantum information processing with bosonic qubits in circuit QED

A Joshi, K Noh, YY Gao - Quantum Science and Technology, 2021 - iopscience.iop.org
The unique features of quantum theory offer a powerful new paradigm for information
processing. Translating these mathematical abstractions into useful algorithms and …

Performance and structure of single-mode bosonic codes

VV Albert, K Noh, K Duivenvoorden, DJ Young… - Physical Review A, 2018 - APS
The early Gottesman, Kitaev, and Preskill (GKP) proposal for encoding a qubit in an
oscillator has recently been followed by cat-and binomial-code proposals. Numerically …

State preparation by shallow circuits using feed forward

H Buhrman, M Folkertsma, B Loff, NMP Neumann - Quantum, 2024 - quantum-journal.org
Fault tolerant quantum computers repetitively apply a four-step procedure: First, perform a
few one and two-qubit quantum gates. Second, perform a syndrome measurement on a …

Short-depth circuits for Dicke state preparation

A Bärtschi, S Eidenbenz - 2022 IEEE International Conference …, 2022 - ieeexplore.ieee.org
We present short-depth quantum circuits to deterministically prepare any Dicke state
\left|D_k^n\right⟩, which is the equal-amplitude superposition of all n-qubit computational …

Quantum Codes from Twisted Unitary -Groups

E Kubischta, I Teixeira - Physical Review Letters, 2024 - APS
We introduce twisted unitary t-groups, a generalization of unitary t-groups under a twisting
by an irreducible representation. We then apply representation theoretic methods to the Knill …

Tight bounds on the simultaneous estimation of incompatible parameters

JS Sidhu, Y Ouyang, ET Campbell, P Kok - Physical Review X, 2021 - APS
The estimation of multiple parameters in quantum metrology is important for a vast array of
applications in quantum information processing. However, the unattainability of fundamental …

A divide-and-conquer approach to Dicke state preparation

S Aktar, A Bärtschi, AHA Badawy… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
We present a divide-and-conquer approach to deterministically prepare Dicke states (ie,
equal-weight superpositions of all-qubit states with Hamming weight) on quantum …

Finding the optimal probe state for multiparameter quantum metrology using conic programming

M Hayashi, Y Ouyang - npj Quantum Information, 2024 - nature.com
The ultimate precision in quantum sensing could be achieved using optimal quantum probe
states. However, current quantum sensing protocols do not use probe states optimally …