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Transition metal dichalcogenides offer a promising platform for integrated coherent light sources, yet lasing has largely relied on hybrid photonic architectures without direct quantum optical verification. Here, we demonstrate an all van der Waals (all vdW) high $β$ nanobeam laser based on a WS$ 2$/MoSe$ 2$/WS$ {2}$ heterostructure, with the MoSe$ 2$ monolayer directly integrated in the WS$ {2}$ based optical res...
To maximize the value of fault tolerant quantum computers, it is essential to develop concrete applications beyond well established domains such as chemistry and condensed matter physics. Here we construct and compile quantum algorithms to simulate the structure of atomic nuclei a topic that has received relatively little attention from the quantum computing community despite its similarities to the electronic str...
Entanglement purification protocols (EPPs) are essential for improving entanglement fidelity to support fault tolerant distributed quantum information processing. Practical entanglement sources are often heterogeneous and source labels may be unavailable at the EPP layer. We show that classical shared randomness, together with buffer memories, can enhance entanglement purification when source labels are unavailabl...
Variational quantum algorithms are a leading approach to near term quantum computing, but their scalability can be limited by barren plateaus and the sampling cost of resolving small changes in the loss landscape. Here, we study the trainability of passive linear optical quantum circuits and introduce a framework based on the ratio of sample variance to circuit variance. This ratio determines the number of circuit...
Entanglement entropy at one dimensional criticality typically follows the Calabrese Cardy scaling. In non Hermitian critical chains near exceptional points, however, we show that the biorthogonal entropy of a finite system retains an additional sensitivity to a small energy gap \(Δ\) even when \(Δ< 1/L\). On top of the usual Calabrese Cardy term, we find an interval independent contribution \(S {\rm res}=\log(ΔL)\...
Formal verification is becoming increasingly practical for quantum computing, yet the ability of AI agents to construct machine checkable proofs in this domain remains unmeasured. We introduce Lean QuantumAlg Bench and Lean QIT Bench, two Lean 4 benchmarks containing 36 and 40 theorem completion tasks for quantum algorithms and quantum information theory, respectively. Every task compiles in a fixed environment an...
In classical and quantum statistics, high dimensional unknown parameters are abundant and it is often prudent to make minimal assumptions about them using so called semiparametric models. To attack a wide range of semiparametric problems in one broad stroke, we present a unified treatment of statistical efficiency for classical and quantum semiparametric models, generalizing the Cramér Rao and Helstrom bounds beyo...
A central challenge for cavity QED based quantum technologies is to make high cooperativity optical interfaces compatible with site resolved arrays of single atoms. Here, we demonstrate optical tweezer arrays of individual $^{87}$Rb atoms inside a fiber Fabry Perot microcavity with single atom cooperativity $\mathcal{C} \sim 90$. We combine background free site resolved fluorescence imaging of extended arrays with...
We present a strategic plan for neutral atom quantum computation, bringing together hardware development and theory advancements to achieve the goal of practical quantum advantage. The concept of practical quantum advantage is defined, along with how to verify claims of advantage, and approaches to designing quantum algorithms that deliver practical advantage. Future directions for neutral atom quantum processor h...
We give an unconditional construction of information theoretically secure one time private key unclonable encryption scheme for one bit messages, with efficient encryption and decryption and exponentially small unclonable indistinguishability advantage.
The interplay between charge order and superconductivity offers a fertile ground for emergent quantum phases. Here we theoretically investigate a square lattice superconductor coexisting with a composite charge density wave (CDW) consisting of a real bond modulation (charge bond order, CBO) and an imaginary hopping modulation (chiral flux phase, CFP) that breaks time reversal symmetry. We uncover that, while CFP a...
Continuous variable quantum state tomography is limited by the cost of resolving non Gaussian structure in high dimensional phase space. We introduce QST Flow, a quantum state tomography framework via flow based generative modeling that represents experimentally accessible phase space quasiprobability distributions with normalized, samplable neural densities rather than a truncated density matrix. The framework ha...
Tuning the coupling strength $g$ of an interacting quantum system may drive a sudden change in its ground state or thermal properties. To identify and grasp non analytical, or even discontinuous, transitions in far from equilibrium dynamics proves more challenging. Recently Krylov complexity $C K$ has offered fresh insights about operator growth, thermalization, and chaos in quantum dynamics. Yet it remains unclea...
Spin relaxation is conventionally described by two independent phenomenological rates longitudinal ($R 1$) and transverse ($R 2$) whose separation obscures a deeper structural unity. Here we develop a geometric framework in which dissipation is represented by a single covariant relaxation tensor acting in Liouville space, from which $R 1$ and $R 2$ emerge as complementary projections. This tensor structure is not ...
We deform the Carlen Maas Wirth framework for noncommutative dynamical optimal transport by an Arnold Nielsen type complexity operator. A positive state independent operator $G$ compatible with the Hilbert bimodule structure of a noncommutative differential calculus $\partial\colon\M\to\Hcal$ can be absorbed into the calculus itself, \[ \partial G:=G^{1/2}\partial. \] The corresponding complexity weighted transpor...
Academic research poster describing a collaborative translational research programme integrating Quantum Neuromorphic Brain–Computer Interfaces (BCI), semantic neural computing, rehabilitation neurotechnology, cognitive prosthetics, brain–robot interfaces, neuromusical therapeutics, and intelligent rehabilitation. The poster presents the evolution of the research programme from computational cognition (1993–2001),...
Wave theory is one of the most fundamental concepts in physics and has profoundly influenced the development of modern science and technology. From the propagation of sound and light to the functioning of wireless communication, medical imaging, and quantum mechanics, wave phenomena are deeply embedded in everyday life. This review article examines the historical evolution of wave theory, beginning with ancient ph...
Stacking van der Waals materials provides a powerful route to engineer emergent electronic and magnetic behaviors through proximity driven interactions. The graphene/CrSBr heterostructure has emerged as a compelling platform in this frontier, exhibiting exotic macroscopic responses including uniaxial surface plasmon polariton propagation and an unconventional quantum Hall effect indicative of strong interfacial el...
Fermion pairing underlies collective quantum phenomena across widely different forms of matter. In extended systems such as ultracold Fermi gases, pairing is commonly understood through the BCS BEC crossover, where the pair size evolves from large, overlapping Cooper pairs to tightly bound dimers. In finite systems such as atomic nuclei, superconducting grains and quantum dots, however, the same pairing tendency c...
Programming distributed quantum systems requires multiple actors to coordinate precise sequences of quantum operations, classical communication, and entanglement generation. Writing such protocols directly as distributed processes is tedious and error prone, and subtle mismatches can cause deadlock or silently incorrect quantum states. We present Qoreo, a choreographic programming language for quantum distributed ...
