LKB - Polarised Helium, Quantum Fluids and Solids


News and Events

New PhD student

Ali Dia (PSL Research University & St Joseph Universiy of Beirut, Lebanon) has joined the group for co-supervised PhD work on laser optical pumping of helium (Nov. 2017 – Nov. 2020).

Qu An, back in LKB

Qu An (PhD) graduated from UMPC on January 20, 2017.

He now works as a post-doc, in J. Dalibard and F. Gerbier’s group,on sodium spinor condensates.

Kastler Symposium 2016

Pierre-Jean Nacher has been involved in the organisation of this one-day scientific event at the ENS (Dec. 1st, 2016). See the video recordings of all contributions.


Alfred Kastler, Nobel Prize in Physics (1966).

Review article

Optically polarized ³He

T. R. Gentile, P. J. Nacher, B. Saam, and T. G. Walker

Rev. Mod. Phys. 89, 045004


Mécanique Quantique, Tome 1 et Tome 2

Nouvelle édtion

C. Cohen-Tannoudji, B. Diu et F. Laloë

(EDP Sciences – Savoirs Actuels – Sept. 2018)


Comprenons-nous vraiment la mécanique quantique ?

Franck Laloë

(EDP Sciences – Savoirs Actuels – 2nd ed., 2018)


Mécanique Quantique – Tome III

Fermions, bosons, photons, corrélations et intrication

C. Cohen-Tannoudji, B. Diu, F. Laloë

(EDP Sciences – Savoirs Actuels, 2017)

WideNMR (2016 — ....)

Objectives: Exploration of innovative concepts and applications in a very wide bore NMR spectrometer.
Scientific partners: IRAMIS, CEA Saclay; IFSTTAR; LKB.
Project homepageRead more

Book chapter

History and physical principles of MRI

M. E. Hayden and P.-J. Nacher.

Magn. Reson. Imaging Handbook, 1

(CRC press, 2016 — Ed. Luca SABA)




Polarised He & quantum fluids
Quantum solid & liquid He
  • Franck Laloë
  • Pierre-Jean Nacher
  • Geneviève Tastevin
  • Polar. 3He - Other People
  • Ali Dia
  • Philippe Jacquier
  • Jules Grucker
  • Solid 4He - Other people

Recent Papers

Optically polarized 3He

T. R. Gentile, P. J. Nacher, B. Saam, and T. G. Walker

Rev. Mod. Phys. 89, 045004 (2017)

Cavitation Density of Superfluid Helium-4 around 1 K

An Qu, Azer Trimeche, Jacques Dupont-roc, Jules Grucker and Philippe Jacquier

Phys. Rev. B (2015), 91, 214115 (2015)

History and physical principles of MRI

M.E. Hayden, and P.-J. Nacher

Magn. Reson. Imaging Handbook, 1, CRC press, 2016 (Ed. Luca SABA)

Dramatic effect of superfluidity on the collapse of ⁴He vapor bubbles

An Qu, Azer Trimeche, Philippe Jacquier and Jules Grucker

Phys. Rev. B (2016), 93, 174521


2017 - Master / PhD


Quantum solid and superfluid helium

2016-2017 internship for Master student, with potential PhD: Determining the Equation Of State of the metastable phases of condensed helium : Stimulated Brillouin scattering analysis.

2017 - Master / PhD


Polarised helium - Laser optical pumping

We offer several types of internship work for Master students, in connection with our study of laser optical pumping in helium plasmas: spectroscopy of metastable He dimers at 465 nm; study of the impact of collisional redistribution on the atomic 2³S-2³P optical transition; optimisation of rf discharges for optical pumping in He gas. This topic is no longer open for PhD (recruitment completed on Sept., 2017).
Read more

2017 - Master / PhD


Polarised helium - Low field MRI

Skilled and motivated students are welcome to join our investigations on low field MRI with laser polarised ³He gas or thermally polarised water. Work may focus on the impact of concomitant field gradients on image quality, or investigate the short-pulse limit and revisit the Bloch-Siegert effect in NMR. This topic is open for PhD.
Read more

2017 - Master


Polarised helium - Liquid NMR

Skilled and motivated students are welcome to join our investigations on liquid NMR in laser polarised ³He-⁴He dilute solutions. Work will deal with recently observed non linear NMR dynamics and focus on the comparison between experimental and numerical data. This topic is not (yet) open for PhD.
Read more

We are always looking for brillant motivated scientists to join our group.

Check the open positions (see above) or send us your CV for application.



Département de Physique Ecole Normale Supérieure, 24 rue Lhomond, F-75231 Paris Cedex 05  

  •  Jules Grucker  : jules.grucker at
  • Philippe Jacquier : philippe.jacquier at
  • An Qu : an.qu at
  • Franck Laloë : laloe at
  • Pierre-Jean Nacher : nacher at
  • Geneviève Tastevin : genevieve.tastevin at

Nos Tutelles et Partenaires

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