Intro- Most of us have heard the question: If a tree falls in a forest and no one is around to hear it, does it make a sound? What you may not have heard is that recently we have found some answers. In one of the recent Nobel prizes in physics in 2022 for quantum entanglement lie clues but along with the surprising response to a longstanding philosophical question are the equally surprising attitudes of the winner. A scientist of the highest caliber who considers climate change a hoax and a waste of time. To my surprise he was fairly open and willing to talk and what I found from interviews and reading was eye opening not just about philosophical and scientific paradoxes but about intellectual tolerance, and the ability to stick to one's convictions.
Choosing physics-
John by the German last name Clauser was born just after Germany had been unseated as the world center of Physics through the Second World War. He grew up in close proximity to his father Francis Clauser who had been deeply involved in aeronautical physics and taught at several prestigious institutions including Johns Hopkins University and UC Santa Cruz. His father was not only a parent but also a scientific mentor and teacher to young John. This connection exposed young Clauser to the latest lab technology and discussions which fired his youthful imagination and sparked his early interest in science and electronics. He excelled in science projects and won several awards at the National Science Fair, including working with early computers and video games undoubtedly benefiting from his fathers work. His father was a skilled teacher, encouraging John’s curiosity and helping him understand complex topics in detail without quenching his curiosity. Despite their different interests, John's sister also had an interesting connection to the world of science, having dated or been involved with several Nobel Prize winners further illustrating their families connections to prestigious levels in the world of Science.
During this era the center of science world was shifting away from Germany which had been depleted of resources and talent due to the war. As a result the depth of understanding in quantum physics also took a backseat to an Einstein dominated interpretation of the physical universe.
Clauser was initially more inclined towards electrical engineering in line with his preference for concrete less abstract thinking. He ultimately relented to his father’s advice to study Physics to gain the broadest understanding of topics before fixating on a specific application. This interest in Physics led him CalTech where he encountered some prominent names in Physics of the time like Richard Feynmen and Murray Gell-Man however none of these figures had much of an influence and to the contrary he tended to find find Feynman more restricting and never particularly agreed with his more abstract approach to Physics. This was also his first encounter with strong disagreement to the scientific approaches and rejection in a scientific academic environment. Clauser then moved on to Columbia University where he found a more receptive environment for his development, yet he continued to struggle with some of the more abstract concepts of quantum mechanics. His approach to physics was concrete - he needed to be able to visualize concepts rather than work purely with abstract mathematics.
Rejection and Bell’s Theorem
Clauser’s interactions with influential scientists like Charlie Townes and other Physicists at Columbia played a significant role in shaping his budding career. While most faculty members were skeptical of his ideas, Townes and others supported the experimental perspective.
Quantum physics, with its counterintuitive principles and enigmatic nature, poses a daunting challenge for even the most brilliant minds hence Feynman's adage, "If you think you understand quantum mechanics, you don’t." Albert Einstein, was also skeptical of some of the more outlandish interpretations of quantum mechanics. By the time John Clauser entered the field, this skepticism still remained, and Clauser, influenced by his father’s teachings to rely directly on the data rather than others' interpretation, was no exception.
Surprised by Reality
In 1972, Clauser, along with his colleagues, conducted one of the first experiments designed to test Bell’s theorem. This experiment involved measuring the correlations between entangled particles and comparing the results with the predictions of quantum mechanics and local hidden variable theories. John Clauser's experimental work built upon Bell’s insights potentially providing critical evidence in support of quantum mechanics
The results completely upended Clauser’s deeply held beliefs that in fact quantum entanglement did occur as quantum theory predicts. The data supported the quantum mechanical predictions and violated Bell’s inequalities, thus rejecting local realism- the tree in fact does not fully exist in the same way until it is observed. This experimental confirmation of quantum entanglement was a significant breakthrough, reinforcing the skittish nature of quantum phenomena and showcasing the fundamental differences between classical and quantum views of reality. The experiments confirmed that quantum mechanics, which predicts entanglement and non-locality, holds true even under rigorous experimental conditions. This outcome has led to a reevaluation of the nature of reality and the role of observation in defining it.
This interpretation challenges our classical understanding of reality and suggests that the act of observation is intrinsic to defining the properties of particles and events. Clauser’s work underscores the importance of this interplay between observation and reality, revealing that the quantum world is fundamentally different from the classical one that we would expect.
Success’s Paradox
In 2022, Clauser was awarded the Nobel Prize in Physics for his pioneering work on entanglement and Bell’s theorem. This recognition was not just for his experimental abilities but also for his role in reshaping our understanding of the quantum world. The experiments that led to this accolade were designed to test the limits of quantum mechanics and verify the predictions of Bell’s theorem.
The science and Clausers research also led to a number of technological applications further validating Clauser senior's advice to his son. The one that garnered the most attention and funding was related to quantum cryptography but there were others in x-rays, imaging and chemical detection. Clauser chose to avoid the more classified subjects but was consistently interested in potential Geology imaging including oil and gas exploration. This interest in technology for oil and gas exploration reflects a pragmatic view of utilizing current resources and technologies, which might align with his climate skepticism. If Clauser sees value and progress in technological advancements for energy extraction, he might be less inclined to accept the urgent, often alarmist narratives around climate change. This could be due to a belief in the efficacy of technology to address potential environmental impacts or a critique of the scientific consensus on climate change.
Against the Wind
In his later years, John Clauser continued to embody the spirit of defiance of the status quo. His career, marked by groundbreaking achievements and controversial viewpoints, is a testament to the importance of intellectual independence. Whether or not you agree with his current opposition to the climate consensus you have to admit that his staunch persistence in the face of opposition has benefited humanity and completely silencing debate would halt intellectual progress. As with his experiments in quantum physics it is sometimes in the pursuit to disprove a theory we deeply disbelieve that we make the greatest strides towards better understanding them. In a more recent bitter and ironic twist of fate, life dealt Clauser a tragic blow when his wife and longtime sailing partner passed away due to a disease contracted while attending the Nobel Prize ceremony. This bitter twist underscores the ironies and complexities of a life spent pushing boundaries, both in science and in personal conviction.
First hand interviews
AIP Interview https://www.aip.org/history-programs/niels-bohr-library/oral-histories/25096
Francis Clauser Obituary https://www.eas.caltech.edu/events/francis-clauser-memorial
https://www.caltech.edu/about/news/proving-that-quantum-entanglement-is-real
