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Seven- and nine-qubit systems, previously thought sufficient for universal quantum computation if their symmetries were broken, have now been demonstrated to be incapable of achieving this goal. This …
A routing overhead factor of one to four, compared to the logarithmic increase demanded by conventional methods, demonstrates a pathway to far more efficient quantum computation. Previously, qubit rou…
Zero transition amplitudes, previously discarded as negligible, reveal that reported gravitational entanglement is not genuine. Calculations including these terms demonstrate an initially separate qua…
Using only O(log n) additional qubits and operations, any existing block encoding can now be transformed into a new, ‘n-regular’ form. This construction bypasses previous limitations of Quantum Signal…
Achieving up to a four-order-of-magnitude improvement in fidelity, a new optimisation kernel bypasses computational limits previously hindering tensor network scalability. This analytical Hessian-vect…
One hundred seconds, the estimated coherence time achievable with a new qubit design, promises to redefine the boundaries of quantum computation. Applying this ‘spin Kerr-cat’ encoding to antimony wit…
Indistinguishable photons, vital for advanced quantum technologies, have previously demanded impractically precise cavity designs. This new architecture achieves a twelve-fold increase in photon extra…
Over 29 independent control parameters were simultaneously optimised, yielding excitation protocols that consistently outperform standard techniques for generating quantum states. This advantage isn’t…
Magnetic coupling between nuclear motion and nuclear spins in molecules Until now, theoretical descriptions of molecular magnetism have treated nuclear spin and molecular vibration as separate entitie…
Multi-slit time-reversed Young interference: source-space grating laws, quadratic-phase effects, and Talbot-like revivals Until now, time-reversed Young interference was largely confined to the simple…
Previously, isolating and characterizing interfacial fractional modes within complex materials proved elusive, often conflated with solitons or non-interacting systems. Now, a single organic platform …
Achieving a maximal CHSH3 violation of $6\sqrt{2}$ with purely real numbers directly refutes the recent claim that real-valued quantum theories are experimentally falsifiable. This new formulation dem…
Avoiding delicate electronic interference has long presented a barrier to reliably reading out complex quantum operations. A new scheme utilises photonic chirality to both control and measure the brai…
A change from 197 microseconds to 66 microseconds, a near-threefold reduction in signal duration, now permits direct observation of fleeting chemical intermediates. Until recently, monitoring these sh…
The IBM calibration-based noise model structurally mirrors hardware with a Pearson r value of 0. 959, yet accounts for only 42% of performance degradation in quantum optimisation. Landscape Span Compr…
Pairwise entanglement, typically absent in periodically driven quantum spin chains, can now be generated through the application of stochastic resetting. This counterintuitive process induces quantum …
Until now, models of quantum decoherence assumed isolated two-level systems, failing to account for interactions between them and ubiquitous thermal fluctuations. This work demonstrates that interacti…
Conventional quantum neural networks demand numerous circuit executions due to probabilistic measurements, limiting practical application. A new framework achieves an output error scaling of O(1/N), m…
Strains of up to 30% have already been observed in suspended graphene, yet controlling electron flow within this material remains a complex challenge. Now, modelling reveals that moderate, zigzag stra…
A measured adherence to the Migdal area law, persisting even when the de Broglie length surpasses the Kolmogorov scale, challenges established boundaries between quantum and classical fluid behaviour.…
Arc search in graphs via Szegedy walks For complete bipartite graphs containing 2n² arcs, a quantum search utilising Szegedy walks achieves a quadratic speedup over classical methods. This work demons…
Ultimate sensitivity of multiparameter estimation in quantum sensing with undetected photons Until now, determining the fewest ‘looks’ needed to accurately measure a sample with quantum precision rema…
The National Quantum Algorithm Center at the Illinois Quantum and Microelectronics Park (IQMP) has awarded funding to five projects, supporting postdoctoral research and development of quantum algorit…
The longstanding belief that decay rates within quantum systems were uniquely defined by Gaussian models has now been overturned. This work confirms a conjecture proposed by Fagnola, Poletti, Sasso an…