Andrew White from the quantum technology laboratory at the University of Queensland, Australia, maintains an excellent web page listing conferences related to quantum technology around the world.   You can find his most recent listing for 2020 conferences here.

In addition to the conferences shown on the list mentioned above, here are some additional conferences:

Utimaco will be hosting an Applied Crypto Symposium in Santa Clara, California on January 16, 2019. The event will cover the threats and challenges associated with quantum cryptography and the implementation of crypto agility and also provide information on available quantum-safe solutions in payments, automotive, and blockchain applications from the industry experts.  Also discussed will be news about the latest implementation of the new algorithms, the Utimaco Hardware Security Modules (HSMs) for quantum-safe algorithm implementation, and the challenges that come with implementing a PQC roadmap.

The First International Workshop on Programming Languages and Quantum Computing (PLaQC 2020) will occur on January 19, 2020 in New Orleans, Louisiana in conjunction with the 47th ACM SIGPLAN Symposium on Principles of Programming Languages (POPL 2020) conference. The workshop aims to bring together researchers from the fields of programming languages and quantum information sciences, exposing the programming languages community to the unique challenges of programming quantum computers. It will promote the development of tools to assist in the process of programming quantum computers, both those that exist today and those likely to exist in the near to far future.

Fosdem’20 in Brussels, Belgium will be holding a Quantum Computing devroom on February 1, 2020.  There will be about a dozen presentations that touch upon the usage of open source software in quantum computing.

A Careers in Quantum (CiQ) event will be held in Bristol, U.K. on February 6-7, 2020. This is a two-day event bridging the gap between skilled students in STEM disciplines and the booming quantum technology industry. With a combination of talks and panel discussion from industrial and academic experts and active networking attendees will find out what an engaging scientific career, both inside and outside academia, might look like. Casual networking sessions will give attendees an opportunity to connect to the industry leaders there and investigate career opportunities further.

The Basel Quantum Metrology and Sensing Conference (BQMS-2020) will be held in Basel, Switzerland from February 12-14, 2020 and hosted by the University of Basel.  It will highlight the state of the art and most recent advances in quantum sensing and quantum metrology with atomic and solid-state spin systems. It will gather key global players in these fields and focus on both fundamental research and engineering relevant to these highly active fields of quantum technology development. BQMS-2020 will feature invited talks given by world-leading experts from Europe and overseas as well as contributed talks and posters selected from the submitted abstracts, all in a single, thematically focused session. The conference is open to all researchers in the field. It is organized in the framework of the ASTERIQS and macQsimal projects of the EU Quantum Technologies Flagship with the goal to be a forum for the entire community.

The Southern California Quantum Computing Meetup Group will be holding a meeting on February 24, 2020 in Anaheim, California. There will be presentations on the different types of hardware methodologies that can be used to construct a quantum computer.

The American Physical Society will be hosting their annual APS March Meeting on March 2-6, 2020 in Denver, Colorado.  The meeting will include multiple sessions and presentations on quantum information.

Inside Quantum Technology – New York, The Future of Quantum Computing, Quantum Cryptography and Quantum Sensors will be held in New York City on April 2-3, 2020. This event is a follow-on to the 2019 events held by IQT in Boston and Europe in 2019. This event is intended for business people and professionals in the quantum technology field who want to keep track of all relevant information to make strategic choices. It will provide comprehensive insights into the commercial future of all areas of quantum technology, presenting both opportunities available today and future applications for businesses and government. New York is the center of the financial world and this means enhanced attention to the conference from both investors and media outlets.

The Quantum Computing Theory in Practice (QCTIP) conference will be held in Cambridge, U.K. on April 6-8, 2020. QCTIP fosters discussion between theorists and practitioners of quantum computing. With keynote speakers, a series of invited talks from academia and industry, poster sessions and panels, it will take stock of the newest developments in the field and map future developments.  The first theme of the conference is the theory of the whole quantum software stack – from quantum algorithms to quantum programming languages to quantum computing architectures. Second, will be a discussion of practical aspects of running experiments on current and NISQ devices. As a third future-looking theme, the conference will touch on roads to scaling up to more and higher quality qubits and the path to bringing down hardware requirements for quantum computations.

The Quantum.Tech London conference will be held in London, U.K. on April 20-22, 2020. The conference will help attendees understand the entire landscape and ecosystem of quantum technologies, and how they fit together.  Questions that will be addressed in the conference include: What are relevant applications for enterprise use, and how developed are they? How coordinated is the approach between industry, academia and government, not just within national borders, but between nations? How developed is the broader supply chain if commercialization is to be accelerated? Are standards in place to allow replicable processes? What methods are there to benchmark, share best practices and learn from disparate industries?

The University of Bristol will be hosting the Bristol Quantum Information Technologies Workshop on April 27-29, 2020 in Bristol, UK. It is a three day annual workshop aimed at enabling leading UK and international academics and industrial partners to come together; to explore and discuss future ambitions and challenges in the field of Quantum Information Technologies.

A Quantum Information Science & Technology Summit will be held on May 5-6, 2020 at the New York Academy of Sciences in New York City. This summit is organized by the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory as part of DOE’s InnovationXLab series.  It will connect leaders in the finance and banking, technology, communications, energy and materials sciences sectors to discuss how to accelerate Quantum Information Science & Technology (QIST) advancements that impact the nation and world.

The Quantum Computing and Engineering Conference (QCEC 2020) will be held in Irving, Texas on June 5-6, 2020.  It is being organized by the Twin Cities ACM Professional Chapter in association with the University of Dallas.  The conference will include presentations of original research and engagement with research labs and features keynotes, industry-faculty panels, and per-reviewed paper presentations.

The IQT Europe 2020 conference will be held in the Netherlands on October 5-7, 2020.  The conference will be produced by Inside Quantum Technologies, QuTech and 3DR Holdings and will be their second annual European conference. Details and a link to the website will be posted at a later date.

The IEEE Quantum Week, also known as the IEEE International Conference on Quantum Computing and Engineering (QCE) will be held in Broomfield, Colorado on October 12-16, 2020. This conference aims to bring together quantum professionals, researchers, educators, entrepreneurs, champions and enthusiasts to exchange and share their experiences, challenges, research results, innovations, applications, pathways and enthusiasm on all aspects of quantum computing, engineering and technologies.

The Second European Quantum Technology Conference (EQTC) will be held in Dublin, Ireland on November 23-27, 2020.  This will be a follow-on to the first EQTC conference held in Grenoble, France in February 2019. Details about this conference will be posted when the event’s web site becomes active.

The fourth annual Q2B Conference presented by QCWare will be held in Silicon Valley, California on December 8-10, 2020.  Details and a link to the website will be posted at a later date.