December might be dark and chilly here in the northern hemisphere, but it’s summer south of the equator – and for many people that means eating ice cream.

It turns out that the physics of ice cream is rather remarkable – as I discovered when I travelled to Canada’s University of Guelph to interview the food scientist Douglas Goff. He is a leading expert on the science of frozen desserts and in this podcast he talks about the unique material properties of ice cream, the analytical tools he uses to study it, and why ice cream goes off when it is left in the freezer for too long.

One half of the Physics World 2024 Breakthrough of the Year has been awarded to Mikhail Lukin, Dolev Bluvstein and colleagues at Harvard University, the Massachusetts Institute of Technology and QuEra Computing for demonstrating quantum error correction on an atomic processor with 48 logical qubits.

In this episode of the Physics World Weekly podcast, Bluvstein and Lukin explain the crucial role that error correction is playing in the development of practical quantum computers. They also describe how atoms are moved around their quantum processor and why this coordinated motion allowed them to create logical qubits and use those qubits to perform quantum computations.

The Physics World 2024 Breakthrough of the Year also cites Hartmut Neven and colleagues at Google Quantum AI and their collaborators for implementing quantum error correction below the surface code threshold in a superconducting chip. Neven talks about his team’s accomplishments in this podcast.

Physics World‘s coverage of the Breakthrough of the Year is supported by Reports on Progress in Physics, which offers unparalleled visibility for your ground-breaking research.

One half of the Physics World 2024 Breakthrough of the Year has been awarded to Hartmut Neven and colleagues at Google Quantum AI and their collaborators for implementing quantum error correction below the surface code threshold in a superconducting chip.

In this episode of the Physics World Weekly podcast, Neven talks about Google’s new Willow quantum processor, which integrates 105 superconducting physical qubits. He also explains how his team used these qubits to create logical qubits with error rates that dropped exponentially with the number of physical qubits used. He also outlines Googles ambitious plan to create a processor with 100, or even 1000, logical qubits by 2030.

The Physics World 2024 Breakthrough of the Year also cites Mikhail Lukin, Dolev Bluvstein and colleagues at Harvard University, the Massachusetts Institute of Technology and QuEra Computing for demonstrating quantum error correction on an atomic processor with 48 logical qubits. Lukin and Bluvstein explain how they did it in this podcast.

Physics World‘s coverage of the Breakthrough of the Year is supported by Reports on Progress in Physics, which offers unparalleled visibility for your ground-breaking research.

This episode of the Physics World Weekly podcast features a lively discussion about our Top 10 Breakthroughs of 2024, which include important research in nuclear physics, quantum computing, medical physics, lasers and more. Physics World editors explain why we have made our selections and look at the broader implications of this impressive body of research.

The top 10 serves as the shortlist for the Physics World Breakthrough of the Year award, the winner of which will be announced on 19 December.

Links to all the nominees, more about their research and the selection criteria can be found here.

Physics World‘s coverage of the Breakthrough of the Year is supported by Reports on Progress in Physics, which offers unparalleled visibility for your ground-breaking research.

This episode of the Physics World Weekly podcast explores the science and commercial applications of metamaterials with Claire Dancer of the University of Warwick and Alastair Hibbins of the University of Exeter.

They lead the UK Metamaterials Network, which brings together people in academia, industry and governmental agencies to support and expand metamaterial R&D; nurture talent and skills; promote the adoption of metamaterials in the wider economy; and much more.

According to the network, “A metamaterial is a 3D structure with a response or function due to the collective effect of meta-atom elements that is not possible to achieve conventionally with any individual constituent material”.

In a wide-ranging conversation with Physics World’s Matin Durrani, Hibbins and Dancer talk about exciting commercial applications of metamaterials including soundproof materials and lenses for mobile phones – and how they look forward to welcoming the thousandth member of the network sometime in 2025.

Climate science and astronomy have much in common, and this has inspired the astrophysicist Travis Rector to call on astronomers to educate themselves, their students and the wider public about climate change. In this episode of the Physics World Weekly podcast, Rector explains why astronomers should listen to the concerns of the public when engaging about the science of global warming. And, he says the positive outlook of some of his students at the University of Alaska Anchorage makes him believe that a climate solution is possible.

Rector says that some astronomers are reluctant to talk to the public about climate change because they have not mastered the intricacies of the science. Indeed, one aspect of atmospheric physics that has challenged scientists is the role that clouds play in global warming. My second guest this week is the science journalist Michael Allen, who has written a feature article for Physics World called “Cloudy with a chance of warming: how physicists are studying the dynamical impact of clouds on climate change”. He talks about climate feedback mechanisms that involve clouds and how aerosols affect clouds and the climate.

In this episode of the Physics World Weekly podcast I am in conversation with Joanne O’Meara, who has bagged a King Charles III Coronation Medal for her outstanding achievements in science education and outreach. Based at Canada’s University of Guelph, the medical physicist talks about her passion for science communication and her plans for a new science centre.

This episode also features a wide-ranging interview with Burcu Saner Okan, who is principal investigator at Sabanci University’s Sustainable Advanced Materials Research Group in Istanbul, Turkey. She explains how graphene is manufactured today and how the process can be made more sustainable – by using recycled materials as feedstocks, for example. Saner Okan also talks about her commercial endeavours including Euronova.

We are entering a second golden age of space travel – with human missions to the Moon and Mars planned for the near future. In this episode of the Physics World Weekly podcast we explore two very different challenges facing the next generation of cosmic explorers.

First up, the radiation oncologist James Welsh chats with Physics World’s Tami Freeman about his new ebook about the biological effects of space radiation on astronauts. They talk about the types and origins of space radiation and how they impact human health. Despite the real dangers, Welsh explains that the human body appears to be more resilient to radiation than are the microelectronics used on spacecraft. Based at Loyola Medicine in the US, Welsh explains why damage to computers, rather than the health of astronauts, could be the limiting factor for space exploration.

Later in the episode I am in conversation with two physicists who have written a paper about how we could implement a universal time standard for the Moon. Based at the US’s National Institute of Standards and Technology (NIST), Biju Patla and Neil Ashby, explain how atomic clocks could be used to create a time system that would making coordinating lunar activities easier – and could operate as a GPS-like system to facilitate navigation. They also say that such a lunar system could be a prototype for a more ambitious system on Mars.

Welsh’s ebook is called “Space Radiation: Astrophysical origins, radiobiological effects and implications for space travellers”. It is part of the IPEM–IOP Series in Physics and Engineering in Medicine and Biology.

Ashby and Patla’s paper is called “A Relativistic Framework to Estimate Clock Rates on the Moon” and it appears in The Astronomical Journal.

In this episode of the Physics World Weekly podcast I explore routes to more sustainable solar energy. My guests are four researchers at the UK’s University of Oxford who have co-authored the “Roadmap on established and emerging photovoltaics for sustainable energy conversion”.

They are the chemist Robert Hoye; the physicists Nakita Noel and Pascal Kaienburg; and the materials scientist Sebastian Bonilla. We define what sustainability means in the context of photovoltaics and we look at the challenges and opportunities for making sustainable solar cells using silicon, perovskites, organic semiconductors and other materials.

This podcast is supported by Pfeiffer Vacuum+Fab Solutions.

Pfeiffer is part of the Busch Group, one of the world’s largest manufacturers of vacuum pumps, vacuum systems, blowers, compressors and gas abatement systems. Explore its products at the Pfeiffer website.

Physicists and others with STEM backgrounds are sought after in industry for their analytical skills. However, traditional training in STEM subjects is often lacking when it comes to nurturing the soft skills that are needed to succeed in managerial and leadership positions.

Our guest in this podcast is Peter Hirst, who is Senior Associate Dean, Executive Education at the MIT Sloan School of Management. He explains how MIT Sloan works with executives to ensure that they efficiently and effectively acquire the skills and knowledge needed to be effective leaders.

This podcast is sponsored by the MIT Sloan School of Management