Join us

Study of quantum and topological states of matter using novel scanning probe microscopy tools. We have recently developed a nano-SQUID (Superconducting Quantum Interference Device) that resides on a very sharp tip and allows imaging of local magnetic fields with single electron spin sensitivity and of current flow patterns. This device provides also a unique tool for cryogenic thermal imaging with 1 ֲµK sensitivity and scanning gate microscopy allowing imaging electron scattering and dissipation mechanisms on the nanoscale. The project will focus on utilizing these novel techniques for microscopic investigation of topological and quantum states of matter including investigation of local topology, superconductivity, magnetism, strongly correlated electronic states, and dissipation in graphene, moiré superlattices, and van der Waals heterostructures.

Working with the Large Array Survey Telescope (LAST). Including searching for fast transients and gravitational wave optical counterparts.

Our group conducts theoretical study of various soft matter problems, typically ones that bring out geometry and topology as a crucial element in explaining observed physical phenomena (patterns, structures, mechanical properties, etc.). Our interests span many types of systems, materials and length scales, and includes liquid crystals, responsive smart materials, metamaterials, biological systems and more.

Our group conducts theoretical study of various soft matter problems, typically ones that bring out geometry and topology as a crucial element in explaining observed physical phenomena (patterns, structures, mechanical properties, etc.). Our interests span many types of systems, materials and length scales, and includes liquid crystals, responsive smart materials, metamaterials, biological systems and more.

Laser plasma accelerators allow to produce the most extreme electric fields of TV/m that are revolutionarized accelerator physics. A critical limitation of laser driven Wakefield concept is that the velocity of the wave is getting slower when the trapped electrons are getting relativistic enough. To avoid such limitation we develop with spatio temporal coupling and special optic a solution that leads to luminal, sub or super- luminal wake of major interest for getting significant energy gain.

The purposes of the thesis is to explore all the benefits of such original approach using the unique 100 TW laser system at WIS. 

The research in my group focuses on observational astrophysics, and our main tools are algorithms and statistics. We use these tools to improve observing capabilities in pulsar, FRB, exoplanet and gravitational wave astronomy.

Observational astrophysics is full with algorithmic and statistical questions that once solved, will dramatically improve our ability to observe the cosmos.

In my group, we combine tools of signal processing, statistical inference, dynamic programming, data structures, lattice algorithms, linear algebra algorithms, signal approximation, phase retrieval, optimization and Bayesian parameter estimation. Mastering these will be an indispensable tool for you wherever you go (academy / Hi-Tech)

It is very common that we invent new tools while trying to observe the cosmos. If you are looking for ways in which you can use your talent and creativity to observe the cosmos, this job post is for you.

The research in my group focuses on observational astrophysics, and our main tools are algorithms and statistics. We use these tools to improve observing capabilities in pulsar, FRB, exoplanet and gravitational wave astronomy.

Observational astrophysics is full with algorithmic and statistical questions that once solved, will dramatically improve our ability to observe the cosmos.

In my group, we combine tools of signal processing, statistical inference, dynamic programming, data structures, lattice algorithms, linear algebra algorithms, signal approximation, phase retrieval, optimization and Bayesian parameter estimation. Mastering these will be an indispensable tool for you wherever you go (academy / Hi-Tech)

It is very common that we invent new tools while trying to observe the cosmos. If you are looking for ways in which you can use your talent and creativity to observe the cosmos, this job post is for you.

I am looking for a student interesting in observational work focussed on observations, in particular spectroscopic, of exploding stars (supernovae), very shortly (within hours or days) of the explosion. The project includes analysis of a large set of data already in hand (the largest and best of its kind in the world; in collaboration with an experienced postdoc) as well as work toward obtaining even better data with the new spectroscopic array being developed in our Neot Smadar Observatory and a new instrument coming on line in Chile.

Join our research on the theory and experiment of Hawking radiation in fiber optics. 

We are looking for a PhD student to join our experiment on probing the physics of the event horizon using nonlinear fiber optics. 

We investigate phase locking of large arrays of coupled lasers in a modified degenerate cavity. We show that the minimal loss lasing solution is mapped to the ground state of an XY spin Hamiltonian with the same coupling matrix provided the intensity of all the lasers is uniform. We study the probability to obtain this ground state for various coupling schemes, system parameters and topological constrains. We demonstrate the effect of crowd synchrony with a sharp transition into an ordered state above a critical number of coupled lasers. Finally, we present recent results demonstrating the ability of our system to solve related problems such as phase retrieval, imaging through scattering medium and more.

In collaboration  with Roee Ozeri we form Bose Einstein condensates of rubidium 87 atoms, quantum degenerated fermionic gas of potassium 40 atoms, and their mixtures using laser cooling and evaporative cooling in magnetic and far-detuned optical traps and study their properties. Such dilute quantum gases offer full control of external and internal degrees of freedom and variety of unique interrogation tools that enable precise studies of many body quantum systems.

By using magnetic Feshbach resonances we tune the system from weakly interacting where the it can be simply described by a macroscopic wave function to the strongly interacting  where highly correlated many body states can be generated and studied. We study and characterize the coherence, dynamics and elementary excitations of these dilute quantum gases using laser and microwave probes and study new type of an opto-mechanical force when they are illuminated with far-detuned uniform laser beam.

I am looking for a student interested in working on a search for supernovae - exploding stars - which we can find using our new observatory in Neot Smadar. The unique aspect of this project is the capability of the new observatory to find such explosions almost "as they happen" as it monitors the sky very frequently - several times every night. This could lead to new discoveries as the capability is novel. The project includes significant hands-on work related to the new observatory, data analysis, as well as work with large follow-up telescopes abroad.  

We study processes in plasmas subjected to high-energy deposition: conversion of electric energy to heat and radiation, turbulence,  fast penetration of magnetic fields into plasmas, and plasma rotation. For diagnosing the plasma we develop fast, high-resolution spectroscopy of radiation in the visible, U.V., vacuum UV, and x-ray regions. We have close collaboration with major universities and institutions in the US and Europe.

In collaboration  with Ofer Firstenberg recently started a new joint project on efficient coupling of neutral-atom tweezer arrays to light. On the theoretical side we are collaborating with Efi Shahmoon. We plan to extend Efi’s original ideas for strong coupling in atomic arrays in sub-wavelength optical lattices (recently verified experimentally by Immanuel Bloch) to the emerging and promising field of quantum simulators with Rydberg atoms in tweezer arrays, where the spacing between the atoms is larger than the wavelength. The challenge to achieved strong coupling to light in such large-spacing arrays emerges from the existence of many diffraction orders that cannot be controlled.

Our proposed scheme to overcome this challenge is based on two supplementary efforts: first we will reduce the spacing between neighboring atoms in the array to <1.5 microns, by suppressing the mutual interferences that limit this distance to >3 microns in most state of the art demonstrations. Such spacing reduction will reduce the non-vanishing diffraction orders from the periodic array from many tens to only few. Next we will incorporate the tweezer array inside a medium finesse optical cavity that will enhance the zero diffraction order as compared to the others so as to ensure strong coupling to it.

We plan to achieve strong coupling to light, show efficient transfer of coherence and quantum states from the array onto a single radiation mode and then use it to demonstrate and study novel schemes for quantum simulators within the atomic tweezer array as well as quantum coupling between tweezer arrays for “scalable” quantum computer based on Rydberg induced gates.

I am looking for a student interested in working on large data sets that are now becoming available as part of the "data explosion" in astrophysics. Weizmann is a major world leader in this, both creating large data sets through our own observational work, as well as acting as a leading center curating large data sets from around the world on our systems. The focus of this project is on analysis of large observational data sets of exploding stars (supernovae) which require development of new methodologies, and is likely to shed light on fundamental questions in astrophysics. The work would interface with more traditional observational work using telescopes in Israel and abroad, as well as with some aspects of computing and mathematics.

We investigate phase locking of large arrays of coupled lasers in a modified degenerate cavity. We show that the minimal loss lasing solution is mapped to the ground state of an XY spin Hamiltonian with the same coupling matrix provided the intensity of all the lasers is uniform. We study the probability to obtain this ground state for various coupling schemes, system parameters and topological constrains. We demonstrate the effect of crowd synchrony with a sharp transition into an ordered state above a critical number of coupled lasers. Finally, we present recent results demonstrating the ability of our system to solve related problems such as phase retrieval, imaging through scattering medium and more.

We study processes in plasmas subjected to high-energy deposition: conversion of electric energy to heat and radiation, turbulence,  fast penetration of magnetic fields into plasmas, and plasma rotation. For diagnosing the plasma we develop fast, high-resolution spectroscopy of radiation in the visible, U.V., vacuum UV, and x-ray regions. We have close collaboration with major universities and institutions in the US and Europe.

In collaboration  with Roee Ozeri we form Bose Einstein condensates of rubidium 87 atoms, quantum degenerated fermionic gas of potassium 40 atoms, and their mixtures using laser cooling and evaporative cooling in magnetic and far-detuned optical traps and study their properties. Such dilute quantum gases offer full control of external and internal degrees of freedom and variety of unique interrogation tools that enable precise studies of many body quantum systems.

By using magnetic Feshbach resonances we tune the system from weakly interacting where the it can be simply described by a macroscopic wave function to the strongly interacting  where highly correlated many body states can be generated and studied. We study and characterize the coherence, dynamics and elementary excitations of these dilute quantum gases using laser and microwave probes and study new type of an opto-mechanical force when they are illuminated with far-detuned uniform laser beam.

In collaboration  with Ofer Firstenberg recently started a new joint project on efficient coupling of neutral-atom tweezer arrays to light. On the theoretical side we are collaborating with Efi Shahmoon. We plan to extend Efi’s original ideas for strong coupling in atomic arrays in sub-wavelength optical lattices (recently verified experimentally by Immanuel Bloch) to the emerging and promising field of quantum simulators with Rydberg atoms in tweezer arrays, where the spacing between the atoms is larger than the wavelength. The challenge to achieved strong coupling to light in such large-spacing arrays emerges from the existence of many diffraction orders that cannot be controlled.

Our proposed scheme to overcome this challenge is based on two supplementary efforts: first we will reduce the spacing between neighboring atoms in the array to <1.5 microns, by suppressing the mutual interferences that limit this distance to >3 microns in most state of the art demonstrations. Such spacing reduction will reduce the non-vanishing diffraction orders from the periodic array from many tens to only few. Next we will incorporate the tweezer array inside a medium finesse optical cavity that will enhance the zero diffraction order as compared to the others so as to ensure strong coupling to it.

We plan to achieve strong coupling to light, show efficient transfer of coherence and quantum states from the array onto a single radiation mode and then use it to demonstrate and study novel schemes for quantum simulators within the atomic tweezer array as well as quantum coupling between tweezer arrays for “scalable” quantum computer based on Rydberg induced gates.