Witnessing Quantum Aspects of Gravity in a Lab

September 23 – 27, 2024

São Paulo, Brazil

ICTP-SAIFR/Principia Institute


Understanding gravity in the framework of quantum mechanics is one of the significant challenges in modern physics. Along this line, a primary question is whether gravity is a quantum entity subject to quantum mechanical rules. Despite the purported weakness of gravity, the phase evolution induced by the gravitational interaction of two-micron size test masses in adjacent matter-wave interferometers can detectably entangle them via the exchange of graviton mediation even when they are placed far enough apart to keep Casimir-Polder forces at bay.

This prescription for witnessing entanglement certifies gravity as a coherent quantum mediator through simple correlation measurements between two spins: one embedded in each test mass known as a QGEM (quantum gravity induced entanglement of masses) protocol. This workshop will discuss various theoretical and experimental challenges to conceive the QGEM protocol in a lab that will require an unprecedented level of accuracy in witnessing the quantum nature of one of nature’s weakest interactions. Moreover, this workshop will also address other theoretical and experimental endeavors to conceive quantum-gravity phenomenology in several different settings.

This event will be instrumental in fostering exchange and collaboration among a diverse cluster of researchers, including expanding field landscapes and exploring new research directions. By incorporating perspectives from multiple communities, we expect to chart a path toward future trends for foundational physics from the study of quantum gravitational phenomena and their crossing with many different areas of modern physics. Key scientific topics at this intersection of theory and experiment cover the recent program for modeling tabletop tests to probe the quantum-gravitational origin of entanglement of massive objects, studies of analogue gravity in condensed-matter systems, tests of the equivalence principle, studies of the interplay of fundamental symmetries in neutrino oscillations, tests of modification of quantum mechanics in configurations where gravity plays an important role, modified dispersion relations, precision tests of general relativity in astrophysics, effective field theory of general relativity and the search of potential quantum gravity signatures in the investigation of cosmic messengers.

The first part of the workshop will focus on possible quantum experiments, and the second part will focus on theoretical aspects of general relativity.


There is no registration fee and limited funds are available for local expenses.



Andrea Addazi (Sichuan University, China, and INFN, Italy)
Sougato Bose (University College London, UK)
Catalina Curceanu (INFN, Italy)
Andrew Geraci (Northwestern University, USA )
Antonino Marcianò (Fudan University, China, and INFN, Italy)
Anupam Mazumdar (University of Groningen, Netherlands)
Gabriel Menezes (UFRRJ and IFT-UNESP, Brazil)
Giorgio Torrieri (Campinas State U., Brazil)



Click HERE for online registration

Deadline: August 3, 2024

Invited Speakers

  • Alessandro Codello (Universidad de la Republica, Uruguay): TBA
  • André Landulfo (UFABC, Brazil): TBA
  • Antonio D. Pereira (UFF, Brazil): TBA
  • Barbara Amaral (USP São Paulo, Brazil): TBA
  • Carlo Cepollaro (Austrian Academy of Sciences and University of Vienna, Austria): TBA
  • Daine Danielson (University of Chicago, USA): TBA
  • Daniel Carney (LBL, USA): TBA
  • Dave Moore (Yale University, USA ): TBA
  • Gautam Satishchandran (Princeton University, USA): TBA
  • Gavin Morley (University of Warwick, UK): TBA
  • Giorgio Gratta (Stanford, USA): TBA
  • Hendrik Ulbricht (Southampton University, USA): TBA
  • Iarley Lobo (Federal University of Paraíba and Federal University of Lavras, Brazil): TBA
  • Jack Harris (Yale University, USA): TBA
  • Jason Twamley (OIST, Japan): TBA
  • John F. Donoghue (UMass Amherst, USA): TBA
  • Jonathan Oppenheim (University College London, UK): TBA
  • Kristian Piscicchia (INFN-LNF and Centro Ricerche Enrico Fermi, Italy): TBA
  • Luca Apadula (Austrian Academy of Sciences and University of Vienna, Austria): TBA
  • Marko Toros (University College London, UK): TBA
  • Markus Arndt (University of Vienna, Austria): TBA
  • Markus Aspelmeyer (University of Vienna, Austria): TBA
  • Massimo Blasone (University of Salerno, Italy) : TBA
  • Maurício Richartz (UFABC, Brazil): TBA
  • Nami Svaiter (CBPF, Brazil): TBA
  • Oriol Romero-Isart (University of Innsbruck, Austria): TBA
  • Peter Barker (University College London, UK): TBA
  • Philip Stamp (University of British Colombia, Canada): TBA
  • Robert Mann (Perimeter Institute and University of Waterloo, Canada): TBA
  • Roldão da Rocha (UFABC, Brazil): TBA
  • Ron Folman (Ben Gurion University, Israel): TBA
  • Sandro Donadi (Queens University, UK): TBA
  • Thiago Guerreiro (PUC-Rio, Brazil): TBA
  • Timothy Light Kovachy (Northwestern University, USA): TBA
  • Tong Cang Li (Purdue University, USA): TBA
  • Vivishek Sudhir (MIT, USA): TBA
  • Yanbei Chen (Caltech, USA): TBA

Tentative Program

Monday (September 23)
Markus Arndt (University of Vienna, Austria)
Markus Aspelmeyer (University of Vienna, Austria)
Ron Folman (Ben Gurion University, Israel)
Vivishek Sudhir (MIT, USA)
Hendrik Ulbricht (Southampton University, USA)
Marko Toros (University College London, UK)
Thiago Guerreiro (PUC-Rio, Brazil)

Tuesday (September 24)
Peter Barker (University College London, UK)
Sandro Donadi (Queens University, UK)
Jack Harris (Yale University, USA)
Gavin Morley (University of Warwick, UK)
Jason Twamley (OIST, Japan)
Yanbei Chen (Caltech, USA)
Philip Stamp (Univ. of British Columbia, Canada)

Wednesday (September 25)
Daniel Carney ( LBL, USA)
Gautam Satishchandran (Princeton University, USA)
Giorgio Gratta (Stanford, USA)
Dave Moore (Yale University, USA )
Timothy Light Kovachy (Northwestern University, USA)
Oriol Romero-Isart (University of Innsbruck, Austria)
Tong Cang Li (Purdue University, USA)

Thursday (September 26)
Barbara Amaral (USP São Paulo, Brazil)
André Landulfo (UFABC, Brazil)
Nami Svaiter (CBPF, Brazil)
Robert Mann (Perimeter Institute and University of Waterloo, Canada)
Daine Danielson (University of Chicago, USA)
John F. Donoghue (UMass Amherst, USA)
Iarley Lobo (Federal University of Paraíba and Federal University of Lavras, Brazil)

Friday (September 27)
Luca Apadula (Austrian Academy of Sciences and University of Vienna, Austria)
Carlo Cepollaro (University of Vienna and Austrian Academy of Sciences, Austria)
Massimo Blasone (University of Salerno, Italy)
Maurício Richartz (UFABC, Brazil)
Antonio D. Pereira (UFF, Brazil)
Alessandro Codello (Universidad de la Republica, Uruguay)
Roldão da Rocha (UFABC, Brazil)
Jonathan Oppenheim (University College London, UK)
Kristian Piscicchia (INFN-LNF and Centro Ricerche Enrico Fermi, Italy)


The program might be changed



Click HERE for online registration

Deadline: August 3, 2024

Additional Information

Attention! Some participants in ICTP-SAIFR activities have received email from fake travel agencies asking for credit card information. All communication with participants will be made by ICTP-SAIFR staff using an e-mail “@ictp-saifr.org”. We will not send any mailings about accommodation that require a credit card number or any sort of deposit.

COVID-19: Brazilians and foreigners no longer have to present proof of vaccination before entering the country.

Visa information: Nationals from several countries in Latin America and Europe are exempt from tourist visa. Nationals from Australia, Canada and USA are exempt from tourist visa until April 10, 2025. Please check here which nationals need a tourist visa to enter Brazil.

Accommodation: Participants, whose accommodation will be provided by the institute, will stay at The Universe Flat. Hotel recommendations are available here.

How to reach the Institute: The program will be held at ICTP South American Institute, located at IFT-UNESP, which is across the street from a major bus and subway terminal (Terminal Barra Funda). The address which is closer to the entrance of the IFT-UNESP building is R. Jornalista Aloysio Biondi, 120 – Barra Funda, São Paulo. The easiest way to reach us is by subway or bus, please find instructions here.