196 citations · 768 across the 21 of their papers we have counts for
21 papers
The Superconducting Plateau
Yaron Kedem
Two recent experiments in lightly doped strontium titanate have shown that the superconducting critical temperature remains constant in a range of carrier concentrations covering a…
Paradigm shift for quantum paraelectric: softening of longitudinal modes
Yaron Kedem
We revisit the quantum phase transition from a paraelectric state to a ferroelectric one and in particular the widespread distinction between a longitudinal modes to transverse one…
Black and White Holes at Material Junctions
Yaron Kedem, Emil J. Bergholtz, Frank Wilczek
Electrons in Type II Weyl semimetals display one-way propagation, which supports totally reflecting behavior at an endpoint, as one has for black hole horizons viewed from the insi…
Direct measurement of a nonlocal entangled quantum state
Wei-Wei Pan, Xiao-Ye Xu, Yaron Kedem +8
Entanglement and wave function description are two of the core concepts that make quantum mechanics such a unique theory. A method to directly measure the wave function, using Weak…
Instability of a dilute Fermi liquid in the presence of forward scattering
Yaron Kedem
The stability of a Fermi liquid is analyzed by summing series of diagrams with an interaction mediated by a system close to quantum criticality. The critical temperature and the ga…
Measurements of nonlocal variables and demonstration of the failure of the product rule for a pre- and postselected pair of photons
Xiao-Ye Xu, Wei-Wei Pan, Qin-Qin Wang +9
We report the first implementation of the von Neumann instantaneous measurements of nonlocal variables which becomes possible due to technological achievements in creating hyperent…
Mixed axial-torsional anomaly in Weyl semimetals
Yago Ferreiros, Yaron Kedem, Emil J. Bergholtz +1
We show that Weyl semimetals exhibit a mixed axial-torsional anomaly in the presence of axial torsion, a concept exclusive of these materials with no known natural fundamental inte…
Observing momentum disturbance in double-slit "which-way" measurements
Ya Xiao, Howard M. Wiseman, Jin-Shi Xu +3
Making a "which-way" measurement (WWM) to identify which slit a particle goes through in a double-slit apparatus will reduce the visibility of interference fringes. There has been…
Novel pairing mechanism for superconductivity at a vanishing level of doping driven by critical ferroelectric modes
Yaron Kedem
Superconductivity (SC) occurring at low densities of mobile electrons is still a mystery since the standard theories do not apply in this regime. We address this problem by using a…
Experimental nonlocal steering of Bohmian trajectories
Ya Xiao, Yaron Kedem, Jin-Shi Xu +2
Interpretations of quantum mechanics (QM), or proposals for underlying theories, that attempt to present a definite realist picture, such as Bohmian mechanics, require strong non-l…
Experimental observation of anomalous trajectories of single photons
Zong-Quan Zhou, Xiao Liu, Yaron Kedem +5
A century after its conception, quantum mechanics still hold surprises that contradict many "common sense" notions. The contradiction is especially sharp in case one consider traje…
Heisenberg-scaling measurement of the single-photon Kerr non-linearity using mixed states
Geng Chen, Nati Aharon, Yong-Nan Sun +7
Improving the precision of measurements is a significant scientific challenge. The challenge is twofold: first, overcoming noise that limits the precision given a fixed amount of a…
An unusual superconducting Isotope Effect in the presence of a Quantum Criticality
Yaron Kedem, Jian-Xin Zhu, Alexander V. Balatsky
We discuss the possible connection between superconductivity (SC) and quantum critical points (QCP) for any QCP that is tunable by isotopic mass substitution. We find a distinct co…
Quantum critical origin of the superconducting dome in SrTiO
Jonathan M. Edge, Yaron Kedem, Ulrich Aschauer +2
We investigate the origin of superconductivity in doped SrTiO (STO) using a combination of density functional and strong coupling theories within the framework of quantum criti…
Odd Frequency Density Waves
Yaron Kedem, Alexander V. Balatsky
A new type of hidden order in many body systems is explored. This order appears in states which are analogues to charge density waves, or spin density waves, but involve anomalous…
Classical and quantum temperature fluctuations via holography
Alexander Balatsky, Sven Bjarke Gudnason, Yaron Kedem +3
We study local temperature fluctuations in a 2+1 dimensional CFT on the sphere, dual to a black hole in asymptotically AdS spacetime. The fluctuation spectrum is governed by the lo…
A comment on "Weak value amplification is suboptimal for estimation and detection"
Yaron Kedem
By assuming that the weak value is real, Ferrie and Combes render their result inapplicable to weak measurement experiments which are aimed at enhancing precision.
Obtaining imaginary weak values with a classical apparatus: applications for the time and frequency domains
Yaron Kedem
Weak measurements with imaginary weak values are reexamined in light of recent experimental results. The shift of the meter, due to the imaginary part of the weak value, is derived…
Phase estimation with weak measurement using a white light source
Xiao-Ye Xu, Yaron Kedem, Kai Sun +3
We report results of a high precision phase estimation based on a weak measurements scheme using commercial light-emitting diode. The method is based on a measurement of the imagin…
Using technical noise to increase the signal-to-noise ratio, via imaginary weak values
Yaron Kedem
The advantages of weak measurements, and especially measurements of imaginary weak values, for precision enhancement, are discussed. A situation is considered in which the initial…
Modular values and weak values of quantum observables
Yaron Kedem, Lev Vaidman
The concept of a modular value of an observable of a pre- and post-selected quantum system is introduced. It is similar in form and in some cases has a close connection to the weak…