J. H. Eberly
YOU?
Author Swipe
View article: Quantum entanglement during single-cycle nonsequential ionization
Quantum entanglement during single-cycle nonsequential ionization Open
In order to elucidate the correlated motion of atomic electrons, we investigate the attosecond-scale dynamics of their entanglement arising due to nonsequential ionization driven by a strong, linearly-polarized laser field. The calculation…
View article: Multipartite Entanglement: A Journey through Geometry
Multipartite Entanglement: A Journey through Geometry Open
Genuine multipartite entanglement is crucial for quantum information and related technologies, but quantifying it has been a long-standing challenge. Most proposed measures do not meet the “genuine” requirement, making them unsuitable for …
View article: Evidence for unexpected robustness of multipartite entanglement against sudden death from spontaneous emission
Evidence for unexpected robustness of multipartite entanglement against sudden death from spontaneous emission Open
Entanglement is known to decay even in isolated systems, an effect attributed to spontaneous emission. This fragility of entanglement can be exacerbated by entanglement sudden death (ESD), where entanglement drops to zero abruptly within a…
View article: Thinking BIG
Thinking BIG Open
Here we develop an informal speculation, which is focused on the existence of fundamental scales for measures of physical interest. In the present case, the scale of interest is the one for energy density, or pressure, for which a fundamen…
View article: Strong-field nonsequential double photoionization using virtual-detector theory with path summation
Strong-field nonsequential double photoionization using virtual-detector theory with path summation Open
We present an ab initio study of the nonsequential strong-field ionization dynamics of a model two-electron atom with helium character. Single- and double-ionization events are characterized and displayed using detector signals extracted a…
View article: Multipartite Entanglement: A Journey Through Geometry
Multipartite Entanglement: A Journey Through Geometry Open
Genuine multipartite entanglement is crucial for quantum information and related technologies but quantifying it has been a long-standing challenge. Most proposed measures do not meet the ``genuine'' requirement, making them unsuitable for…
View article: Editorial note for the J. Phys. B. special issue ‘Coherent Control: Photons, Atoms and Molecules’ honoring the life and work of Bruce W Shore
Editorial note for the J. Phys. B. special issue ‘Coherent Control: Photons, Atoms and Molecules’ honoring the life and work of Bruce W Shore Open
This special issue "Coherent Control: Photons, Atoms and Molecules", honors the life and work of Bruce W. Shore who passed away on January 9, 2021 at the age of 85.
View article: Strong-Field Nonsequential Double Photoionization Using Virtual Detector Theory with Path Summation
Strong-Field Nonsequential Double Photoionization Using Virtual Detector Theory with Path Summation Open
We present an ab initio study of the nonsequential strong-field ionization dynamics of a model two-electron atom with helium character. Single- and double-ionization events are characterized and displayed using detector signals extracted a…
View article: Unexpected Robustness of Multipartite Entanglement against Sudden Death from Spontaneous Emission
Unexpected Robustness of Multipartite Entanglement against Sudden Death from Spontaneous Emission Open
Entanglement is known to decay even in isolated systems, an effect attributed to spontaneous emission. This fragility of entanglement can be exacerbated by entanglement sudden death (ESD), where entanglement drops to zero abruptly within a…
View article: Experimental Examination of Entanglement Estimates
Experimental Examination of Entanglement Estimates Open
Recently a proper genuine multipartite entanglement (GME) measure has been found for three-qubit pure states [see Xie and Eberly, Phys. Rev. Lett. 127, 040403 (2021)], but capturing useful entanglement measures for mixed states has remaine…
View article: Managing the Three-Party Entanglement Challenge
Managing the Three-Party Entanglement Challenge Open
We introduce the challenges of multi-party quantum entanglement and explain a recent success in learning to take its measure. Given the widely accepted reputation of entanglement as a counter-intuitive feature of quantum theory, we first d…
View article: Benchmark of few-level quantum theory vs ab initio numerical solutions for the strong-field Autler–Townes effect in photoionization of hydrogen
Benchmark of few-level quantum theory vs ab initio numerical solutions for the strong-field Autler–Townes effect in photoionization of hydrogen Open
The temporal and spectral consequences of an intermediate resonance en route to photoionization are investigated theoretically in two ways: by solving few-level model equations and by ab initio numerical solution of the time-dependent Schr…
View article: Freezing and Thawing of Entanglement in Lossless Multiparty Systems
Freezing and Thawing of Entanglement in Lossless Multiparty Systems Open
Entanglement freezing has been demonstrated existing in various noisy decoherence mechanisms. Here we explore its universality by investigating freezing behavior in a lossless multiparty system, i.e., an $N$-site optical lattice (or equiva…
View article: Triangle Measure of Tripartite Entanglement
Triangle Measure of Tripartite Entanglement Open
Although genuine multipartite entanglement has already been generated and verified by experiments, most of the existing measures cannot detect genuine entanglement faithfully. In this work, by exploiting for the first time a previously ove…
View article: Sudden freezing and thawing of entanglement sharing in a shrunken volume
Sudden freezing and thawing of entanglement sharing in a shrunken volume Open
Within the one-excitation context of two identical two-level atoms\ninteracting with a common cavity, we examine the dynamics of all bipartite\none-to-other entanglements between each qubit and the remaining part of the\nwhole system. We f…
View article: Quantification and observation of genuine three-party coherence: A solution based on classical optics
Quantification and observation of genuine three-party coherence: A solution based on classical optics Open
We introduce a quantification of genuine three-party pure-state coherence for wave fields, classical and quantum, by borrowing concepts from classical optics. The tensor structure of a classical paraxial light beam composed of three princi…
View article: Periodic Sudden Freezing and Thawing of Entanglement in Multiparty Pure-State Quantum Systems
Periodic Sudden Freezing and Thawing of Entanglement in Multiparty Pure-State Quantum Systems Open
Within the one-excitation context of two identical two-level atoms interacting with a common cavity, we are concerned with the dynamics of all bipartite one-to-other entanglements between each qubit and the remaining part of the whole syst…
View article: Quantifying Three-Party Optical Coherence: Definition, Constraints, and Experimental Confirmation
Quantifying Three-Party Optical Coherence: Definition, Constraints, and Experimental Confirmation Open
We introduce a quantification of three-party coherence of a classical paraxial optical beam. The traditional basis-independent optical quantity called degree of polarization is determined to be the desired quantitative two-party coherence …
View article: Extended virtual detector theory including quantum interferences
Extended virtual detector theory including quantum interferences Open
We extend our earlier "virtual detector" method [X. Wang, J. Tian, and J. H. Eberly, Phys. Rev. Lett. 110, 243001 (2013)], a hybrid quantum mechanical and classical trajectory method, to include phases in the classical trajectories. Effect…
View article: Entanglement of a pair of quantum emitters under continuous fluorescence measurements
Entanglement of a pair of quantum emitters under continuous fluorescence measurements Open
We investigate measurement protocols that generate quantum entanglement between two remote qubits, through joint continuous detection of their spontaneous emission. We consider a device geometry similar to that used in well-known Bell-stat…
View article: Wave-Particle Duality Controlled by Single-Photon Self-Entanglement
Wave-Particle Duality Controlled by Single-Photon Self-Entanglement Open
We experimentally observe that quantum duality of a single photon is controlled by its self-entanglement through a three-way quantum coherence identity $V^2+D^2+C^2=1$. Here V, D, C represent waveness, particleness, and self-entanglement r…
View article: Diffusive entanglement generation by continuous homodyne monitoring of spontaneous emission
Diffusive entanglement generation by continuous homodyne monitoring of spontaneous emission Open
We consider protocols to generate quantum entanglement between two remote qubits, through joint time-continuous detection of their spontaneous emission. We demonstrate that schemes based on homodyne detection, leading to diffusive quantum …
View article: Polarization coherence theorem: reply
Polarization coherence theorem: reply Open
We reply to the comment [Optica6, 829 (2019)OPTIC82334-253610.1364/OPTICA.6.000829] on our recent polarization coherence theorem (PCT): P2=V2+D2 [Optica4, 1113 (2017)OPTIC82334-253610.1364/OPTICA.4.001113]. The main contribution of the PCT…
View article: Entanglement limits duality and vice versa
Entanglement limits duality and vice versa Open
Ninety years ago in 1927, at an international congress in Como, Italy, Niels Bohr gave an address which is recognized as the first instance in which the term "complementarity", as a physical concept, was spoken publicly [1], revealing Bohr…
View article: Bohr's Complementarity: Completed with Entanglement
Bohr's Complementarity: Completed with Entanglement Open
Ninety years ago in 1927, at an international congress in Como, Italy, Niels Bohr gave an address which is recognized as the first instance in which the term "complementarity", as a physical concept, was spoken publicly [1], revealing Bohr…
View article: Emerging Connections: Classical and Quantum Optics
Emerging Connections: Classical and Quantum Optics Open
Quantum optics and classical optics have coexisted for nearly a century as two distinct, self-consistent descriptions of light. What influences there were between the two domains all tended to go in one direction, as concepts from classica…
View article: Polarization coherence theorem
Polarization coherence theorem Open
Visibility $V$ and distinguishability $D$ quantify wave-ray duality: $V^2 + D^2 \le 1$. We join them to polarization $P$ via the Polarization Coherence Theorem, a tight equality: $P^2 = V^2 + D^2$.