Zobrazeno 1 - 10
of 144 388
pro vyhledávání: '"QUANTUM STATE"'
Autor:
Nghiem, Nhat A.
We propose and analyze a simple framework for estimating the amplitudes of a given $n$-qubit quantum state $\ket{\psi} = \sum_{i=0}^{2^n-1} a_i \ket{i}$ in computational basis, utilizing a single-qubit measurement only. Previously, it was a common pr
Externí odkaz:
http://arxiv.org/abs/2412.07123
Autor:
Puente, Daniel Alcalde, Rizzi, Matteo
This work introduces a self-learning protocol that incorporates measurement and feedback into variational quantum circuits for efficient quantum state preparation. By combining projective measurements with conditional feedback, the protocol learns st
Externí odkaz:
http://arxiv.org/abs/2411.19914
Quantum state tomography serves as a key tool for identifying quantum states generated in quantum computers and simulators, typically involving local operations on individual particles or qubits to enable measurements in various bases. However, this
Externí odkaz:
http://arxiv.org/abs/2411.16603
The advantage of quantum protocols lies in the inherent properties of the shared quantum states. These states are sometimes provided by sources that are not trusted, and therefore need to be verified. Finding secure and efficient quantum state verifi
Externí odkaz:
http://arxiv.org/abs/2411.04767
Quantum state tomography is the fundamental physical task of learning a complete classical description of an unknown state of a quantum system given coherent access to many identical samples of it. The complexity of this task is commonly characterise
Externí odkaz:
http://arxiv.org/abs/2410.16220
Autor:
Liu, Yupan, Wang, Qisheng
We investigate the computational complexity of estimating the trace of quantum state powers $\text{tr}(\rho^q)$ for an $n$-qubit mixed quantum state $\rho$, given its state-preparation circuit of size $\text{poly}(n)$. This quantity is closely relate
Externí odkaz:
http://arxiv.org/abs/2410.13559
Models for quantum state reduction address the quantum measurement problem by suggesting weak modifications to Schr\"odinger's equation that have no observable effect at microscopic scales, but dominate the dynamics of macroscopic objects. Enforcing
Externí odkaz:
http://arxiv.org/abs/2410.08844
Autor:
Mutreja, Saachi, Zhandry, Mark
Cryptographic group actions are a leading contender for post-quantum cryptography, and have also been used in the development of quantum cryptographic protocols. In this work, we explore quantum state group actions, which consist of a group acting on
Externí odkaz:
http://arxiv.org/abs/2410.08547
Autor:
Weiss, Matthew B.
Can the state-space of $d$-dimensional quantum theory be derived from studying the behavior of a single measuring device? The answer is yes, if the measuring device corresponds to a complex-projective 3-design. Through its Jordan algebraic structure,
Externí odkaz:
http://arxiv.org/abs/2412.13505