Papers

Hyeongrak Choi, F. Chong, D. Englund +1 more·Mar 30, 2023

Quantum error correction is an essential component for practical quantum computing on noisy quantum hardware. However, logical operations on error-corrected qubits require a significant resource overhead, especially for high-precision and high-fideli...

Pablo Fernández, M. Martin-Delgado·Mar 30, 2023

We introduce a class of circuits that solve a particular case of the Bernstein–Vazirani recursive problem for second-level recursion. This class of circuits allows for the implementation of the oracle using a number of T-gates that grows linearly wit...

D. Debroy, É. Genois, J. Gross +6 more·Mar 30, 2023

We present Context Aware Fidelity Estimation (CAFE), a framework for benchmarking quantum operations that offers several practical advantages over existing methods such as Randomized Benchmarking (RB) and Cross-Entropy Benchmarking (XEB). In CAFE, a ...

A. Farouk, I. Beterov, Peng Xu +1 more·Mar 29, 2023

Based on our recent paper [arXiv:2206.12176 (2022)], we propose a scalable heteronuclear architecture of parallel implementation of CNOT gates in arrays of alkali-metal neutral atoms for quantum information processing. We considered a scheme where we...

Takaaki Aoki, T. Kanao, Hayato Goto +2 more·Mar 29, 2023

Kerr-cat qubits are a promising candidate for fault-tolerant quantum computers owing to the biased nature of their errors. The $ZZ$ coupling between the qubits can be utilized for a two-qubit entangling gate, but the residual coupling called $ZZ$ cro...

Rui Li, J. Qian, Weiping Zhang·Mar 29, 2023

Rydberg quantum gate serving as an indispensable computing unit for neutral-atom quantum computation, has attracted intense research efforts for the last decade. However, the state-of-the-art experiments have not reached the high gate fidelity as pre...

M. Webster, A. O. Quintavalle, S. Bartlett·Mar 27, 2023

Storing quantum information in a quantum error correction code can protect it from errors, but the ability to transform the stored quantum information in a fault tolerant way is equally important. Logical Pauli group operators can be implemented on C...

Sowrabh Sudevan, Daniel Azses, Emanuele G. Dalla Torre +2 more·Mar 27, 2023

An entangled state is said to be $m$-uniform if the reduced density matrix of any $m$ qubits is maximally mixed. This is intimately linked to pure quantum error correction codes (QECCs), which allow not only to correct errors, but also to identify th...

F. Rozpędek, K. Seshadreesan, P. Polakos +2 more·Mar 27, 2023

Long distance quantum communication will require the use of quantum repeaters to overcome the exponential attenuation of signal with distance. One class of such repeaters utilizes quantum error correction to overcome losses in the communication chann...

A. Ketterer, T. Wellens·Mar 24, 2023

Currently available quantum computing hardware based on superconducting transmon architectures realizes networks of hundreds of qubits with the possibility of controlled nearest-neighbor interactions. However, the inherent noise and decoherence effec...

Sven Jandura, Vineesha Srivastava, Laura Pecorari +2 more·Mar 23, 2023

We present two protocols for implementing deterministic non-local multi-qubit quantum gates on qubits coupled to a common cavity mode. The protocols rely only on a classical drive of the cavity modes, while no external drive of the qubits is required...

Yutaro Akahoshi, Kazunori Maruyama, H. Oshima +2 more·Mar 23, 2023

Quantum computers are expected to bring drastic acceleration to several computing tasks against classical computers. Noisy intermediate-scale quantum (NISQ) devices, which have tens to hundreds of noisy physical qubits, are gradually becoming availab...

Tim Schwagerl, C. Issever, K. Jansen +4 more·Mar 23, 2023

The reconstruction of trajectories of charged particles is a key computational challenge for current and future collider experiments. Considering the rapid progress in quantum computing, it is crucial to explore its potential for this and other probl...

Qi-Ping Su, Liang Bin, Yu Zhang +1 more·Mar 23, 2023

In recent years, quantum state engineering and quantum information processing using microwave fields and photons have received increasing attention. In addition, multiqubit gates play an important role in quantum information processing. In this work,...

Gefen Baranes, S. Even-Haim, R. Ruimy +5 more·Mar 23, 2023

We show that the coherent interaction between free electrons and photons can be used for universal control of continuous-variable photonic quantum states in the form of Gottesman-Kitaev-Preskill (GKP) qubits. Specifically, we find that electron energ...

Xinxin Yang, Liang-Liang Guo, Haifeng Zhang +8 more·Mar 22, 2023

The non-adiabatic geometric quantum computation (NGQC) has attracted a lot of attention for noise-resilient quantum control. However, previous implementations of NGQC require long evolution paths that make them more vulnerable to incoherent errors th...

M. Consiglio, J. Settino, Andrea Giordano +6 more·Mar 20, 2023

The preparation of an equilibrium thermal state of a quantum many-body system on noisy intermediate-scale quantum (NISQ) devices is an important task in order to extend the range of applications of quantum computation. Faithful Gibbs state preparatio...

K. Asnaashari, D. Bondarenko, R. V. Krems·Mar 17, 2023

While quantum computing algorithms have been widely applied for electronic structure calculations, applications to molecular dynamics remain scarce. Complex and varied landscapes of molecular potential energy surfaces give rise to vibrational states ...

A. Messinger, M. Fellner, W. Lechner·Mar 15, 2023

We present a protocol to encode and decode arbitrary quantum states in the parity architecture with constant circuit depth using measurements, local nearest-neighbor and single-qubit operations only. While this procedure typically requires a quadrati...

William W. Huang·Mar 14, 2023

Using Grover algorithm, this work investigates a technique for encoding search phrases used in wildcard searches. The technique involves creating a phase Oracle that loads data into a quantum circuit together with the search terms that have been enco...