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 …

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 …

A family of permutationally invariant quantum codes

A Aydin, MA Alekseyev, A Barg - Quantum, 2024‏ - quantum-journal.org
We construct a new family of permutationally invariant codes that correct $ t $ Pauli errors for
any $ t\ge 1$. We also show that codes in the new family correct quantum deletion errors as …

Robust quantum metrology with explicit symmetric states

Y Ouyang, N Shettell, D Markham - IEEE Transactions on …, 2021‏ - ieeexplore.ieee.org
Quantum metrology is a promising practical use case for quantum technologies, where
physical quantities can be measured with unprecedented precision. In lieu of quantum error …

State preparation of antisymmetrized geminal power on a quantum computer without number projection

A Khamoshi, R Dutta, GE Scuseria - The Journal of Physical …, 2023‏ - ACS Publications
The antisymmetrized geminal power (AGP) is equivalent to the number projected Bardeen–
Cooper–Schrieffer (PBCS) wave function. It is also an elementary symmetric polynomial …

q-analog qudit Dicke states

D Raveh, RI Nepomechie - Journal of Physics A: Mathematical …, 2024‏ - iopscience.iop.org
q-analog qudit Dicke states Page 1 Journal of Physics A: Mathematical and Theoretical
PAPER • OPEN ACCESS q-analog qudit Dicke states To cite this article: David Raveh and …

Permutation-invariant quantum coding for quantum deletion channels

Y Ouyang - 2021 IEEE International Symposium on Information …, 2021‏ - ieeexplore.ieee.org
Quantum deletions, which are harder to correct than erasure errors, occur in many realistic
settings. It is therefore pertinent to develop quantum coding schemes for quantum deletion …

Qudit Dicke state preparation

RI Nepomechie, D Raveh - arxiv preprint arxiv:2301.04989, 2023‏ - arxiv.org
Qudit Dicke states are higher-dimensional analogues of an important class of highly-
entangled completely symmetric quantum states known as (qubit) Dicke states. A circuit for …

Permutation-invariant quantum codes for deletion errors

T Shibayama, M Hagiwara - 2021 IEEE International …, 2021‏ - ieeexplore.ieee.org
This paper presents conditions for constructing permutation-invariant quantum codes for
deletion errors and provides a method for constructing them. Our codes include examples of …