Results 131 to 140 of about 2,226,866 (302)
Simple subspace based adaptive beamforming under Toeplitz covariances
EURASIP Journal on Advances in Signal ProcessingWhen uncorrelated signals are incident on a uniform linear array, the array covariance matrix is of the Toeplitz form. An adaptive beamforming method is proposed based on the signal-plus-interference (SI) subspace via the Toeplitz rectification of the ...
Yang-Ho Choi
doaj +1 more source
Efficient Simulation of Open Quantum Systems on NISQ Trapped‐Ion Hardware
Advanced Quantum Technologies, EarlyView.Open quantum systems exhibit rich dynamics that can be simulated efficiently on quantum computers, allowing us to learn more about their behavior. This work applies a new method to simulate certain open quantum systems on noisy trapped‐ion quantum hardware.
Colin Burdine +3 more
wiley +1 more source
Generalized unitary evolution for symplectic scalar fermions
Journal of High Energy PhysicsThe theory of symplectic scalar fermion of LeClair and Neubert is studied. The theory evades the conventional spin-statistics theorem because its Hamiltonian is pseudo Hermitian. The definition of pseudo Hermiticity is examined in the interacting and the
Cheng-Yang Lee
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Advanced Quantum Technologies, EarlyView.This work proposes a photon subtraction scheme, termed ′photon culling′, that enables the selective extraction of a single photon based on its arrival time relative to other photons. This scheme enables the generation of multi‐photon Fock states with high fidelity and modal purity, demonstrating significant potential for quantum metrology applications ...
Abdolreza Pasharavesh, Michal Bajcsy
wiley +1 more source
Nonreciprocal Entanglement of Frequency‐Distinct Qubits
Advanced Quantum Technologies, EarlyView.This work demonstrates the first spatiotemporal superconducting metasurface for nonreciprocal entanglement between frequency‐mismatched qubits at millikelvin temperatures. Leveraging space‐time‐modulated Josephson field‐effect transistors (JoFETs), the platform enables unidirectional, spurious‐free quantum state conversion with high efficiency.
Sajjad Taravati
wiley +1 more source
Dark Excitonic State Preparation in a Symmetry‐Protected Open Quantum Battery
Advanced Quantum Technologies, EarlyView.An optical charging protocol is presented for an excitonic quantum battery that prepares the system in a symmetry‐protected dark excited state. Using a continuous‐wave laser followed by controlled relaxation, the system stores energy in a state resilient to environmental losses. Abstract Previous work (J. Phys. Chem.
Zohreh Khodadad +2 more
wiley +1 more source
Research on Least-Square η-Hermitian Solutions of Split Quaternion Matrix Equations
Journal of MathematicsIn this article, we use the real representation matrix of the split quaternion matrix, vector operator, Kronecker product, and Moore–Penrose generalized inverse.
Yang Zhang, Xiaoda Zhang
doaj +1 more source
On the number of crossings in the spectrum of a hermitian matrix which depends on a real parameter [PDF]
, 1971 T.P. Valkering
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Simultaneous reduction of a complex skew matrix and a Hermitian matrix
Linear Algebra and its Applications, 1991 AbstractA canonical form and a complete set of invariants are obtained for the simultaneous reduction of two complex matrices, one of which is skew symmetric and the other Hermitian.
Robert C. Thompson, Barbara A. Li Santi
openaire +2 more sources
Low‐Loss Polarization‐Maintaining Router for Single and Entangled Photons at a Telecom Wavelength
Advanced Quantum Technologies, EarlyView.A novel electro‐optic routing of arbitrarily polarized single photons and, crucially, multi‐photon entangled states is demonstrated. Utilizing optics with near‐normal incidence and cross‐aligned electro‐optic crystals, low‐loss polarization‐maintaining routing is achieved with a minimal number of components.
Pengfei Wang +5 more
wiley +1 more source