Towards practical secure delegated quantum computing with semi-classical light

Boris Bourdoncle, Pierre-Emmanuel Emeriau, Paul Hilaire, Shane Mansfield, Luka Music, and Stephen Wein,

Quantum 9, 1943 (2025).

Secure Delegated Quantum Computation (SDQC) protocols are a vital piece of the future quantum information processing global architecture since they allow end-users to perform their valuable…

Chenfeng Cao, Yeqing Zhou, Swamit Tannu, Nic Shannon, and Robert Joynt,

Quantum 9, 1942 (2025).

Variational quantum algorithms (VQAs) represent a promising pathway toward achieving practical quantum advantage on near-term hardware. Despite this promise, for generic, expressive ansätze,…

X. T. Yan, S. Kannan, Y. S. Athreya, A. G. Truscott, and S. S. Hodgman,

Quantum 9, 1939 (2025).

We propose a Bell test experiment using momentum-entangled atom pairs of different masses, specifically metastable helium isotopes ${}^{3}He^{*}$ and ${}^{4}He^{*}$, though the method extends to…

Dripto M. Debroy, Matt McEwen, Craig Gidney, Noah Shutty, and Adam Zalcman,

Quantum 9, 1936 (2025).

Recently, usage of detecting regions facilitated the discovery of new circuits for fault-tolerantly implementing the surface code. Building on these ideas, we present LUCI, a framework for c…

Shiran Even-Haim, Asaf A. Diringer, Ron Ruimy, Gefen Baranes, Alexey Gorlach, Shay Hacohen-Gourgy, and Ido Kaminer,

Quantum 9, 1934 (2025).

Conditional displacement with a qubit ancilla is a critical component in continuous-variable error correction protocols. We present the generalized conditional displacement operator, conditi…

Jan Perina Jr, Kishore Thapliyal, Grzegorz Chimczak, Anna Kowalewska-Kudlaszyk, and Adam Miranowicz,

Quantum 9, 1933 (2025).

We analyze the existence and degeneracies of quantum exceptional, diabolical, and hybrid points in simple bosonic systems – comprising up to six modes with damping and/or amplification – und…

Kishore Thapliyal, Jan Perina Jr., Grzegorz Chimczak, Anna Kowalewska-Kudlaszyk, and Adam Miranowicz,

Quantum 9, 1932 (2025).

The existence and degeneracies of quantum exceptional, diabolical, and hybrid (i.e., diabolically degenerated exceptional) singularities of simple bosonic systems composed of up to five mode…

Mingyu Kang, Yingjia Lin, Hanwen Yao, Mert Gökduman, Arianna Meinking, and Kenneth R. Brown,

Quantum 9, 1931 (2025).

To achieve quantum fault tolerance with lower overhead, quantum low-density parity-check (QLDPC) codes have emerged as a promising alternative to topological codes such as the surface code,…

Lewis Wooltorton, Peter Brown, and Roger Colbeck,

Quantum 9, 1930 (2025).

Nonlocal tests on multi-partite quantum correlations form the basis of protocols that certify randomness in a device-independent (DI) way. Such correlations admit a rich structure, making th…

Marit O. E. Steiner, Julen S. Pedernales, and Martin B. Plenio,

Quantum 9, 1928 (2025).

We explore the potential of levitating solids embedded with non-permanent, optically controllable electron spins, which can be used to hyperpolarize their nuclear spin environment with excep…